View source for List of gauge conversions

{{Short description|none}}
{{Use dmy dates|date=July 2021}}
{{Sidebar track gauge}}
This is a list of notable railway [[track gauge conversion]]s, railway lines where the distance between the rails is broadened or narrowed. Conversions to broader gauge are generally to accommodate heavier loads or for wider cars, while conversions to narrower gauge tend to be for compatibility with other lines on a rail network. This list also contains instances of lines already prepared for conversion and those which are planned to be converted.

{| class="wikitable sortable"
! New gauge<br />(mm)
! Original<br />(mm)
! Date
! Flag & Location
!class="unsortable"| Description
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
| 
| {{flag|Angola}}
| [[Luanda Railway]]
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#E5C4A1;"           | {{RailGauge|600mm}}
| 1950s
| {{flagu|Angola}}
| [[Moçâmedes Railway]]<ref>Durrant, A.E., A.A. Jorgensen, C.P. Lewis. Steam in Africa, London, 1981, Hamlyn.</ref><ref>{{cite web|url=http://sinfin.net/railways/world/angola.html|access-date=2010-11-27|title=Railways in Angola|date=2010-11-11}}</ref>
|-
! style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}} 
! style="background-color:#5abf56;"|            {{RailGauge|1600mm}}
| 1885
| {{flagu|Australia}} <br> {{flagu|Tasmania}}
| [[Rail transport in Tasmania]] Partially converted to dual gauge as intermediate stage.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}} 
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}} 
| 1970
| {{flag|Australia}}  <br> {{flagu|South Australia}}
| Transcontinental line: [[Broken Hill railway station|Broken Hill]] to [[Port Augusta railway station|Port Augusta]] and [[Kalgoorlie railway station|Kalgoorlie]] to [[East Perth railway station|Perth]] as part of the [[Sydney–Perth rail corridor]].
|-
!style="background-color:#568dd0;"           | {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1980
| {{flagu|Australia}}  <br> {{flagu|South Australia}}
| Completion of the penultimate link in the [[Adelaide–Darwin rail corridor]], from [[Tarcoola railway station, South Australia|Tarcoola]] to [[Alice Springs railway station|Alice Springs]]. The new line replaced the ancient narrow-gauge [[Central Australia Railway]] that was on a different, more floodprone alignment.{{Citation needed|date=May 2022}}
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}} 
!style="background-color:#5abf56;"| {{RailGauge|1600mm}} 
| 1990-1995
| {{flagu|Australia}}  <br> {{flagu|South Australia}}  <br> {{flagu|Victoria}}
| [[Melbourne–Adelaide rail corridor]] – {{convert|600|km|abbr=on}} of convertible sleepers installed in 1990 to facilitate quick conversion in 1995.{{Citation needed|date=May 2022}}
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 2004
| {{flagu|Australia}}  <br> {{flagu|Northern Territory}}
| Completion of the final link in the [[Adelaide–Darwin rail corridor]], from [[Alice Springs railway station|Alice Springs]] to [[Darwin railway station|Darwin]]. For about half the distance, the new line replaced the ancient narrow-gauge [[North Australia Railway]] that was closed in 1976.{{Citation needed|date=May 2022}}
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#5abf56;"| {{RailGauge|1600mm}}
| 2008–2010
| {{flagu|Australia}} <br> {{flagu|Victoria}}
| [[North East railway line]] in Victoria. A {{convert|200|km|abbr=on}} section between [[Seymour railway station|Seymour]] and [[Albury railway station|Albury]] was converted, changing two parallel tracks of different gauges to [[double track]]. The [[Oaklands railway line, Victoria|Oaklands line]] that would otherwise have been left as an [[Break-of-gauge#Gauge|orphan]] was converted in 2009. The cost of converting this {{convert|126|km|abbr=on}} line has been estimated as just over {{currency|13M|AUD}}.<ref>{{cite web |url=http://www.kenjasper.net.au/home/index.php?option=com_content&task=view&id=269&Itemid=9 |title=Jasper supports Oaklands rail line upgrade |publisher=Ken Jasper MLA, Member for Murray Valley |location=Australia |date=9 July 2008 |access-date=1 June 2016 |url-status=dead |archive-url=https://web.archive.org/web/20080718223706/http://www.kenjasper.net.au/home/index.php?option=com_content&task=view&id=269&Itemid=9 |archive-date=18 July 2008}}</ref>
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#5abf56;"| {{RailGauge|1600mm}}
| 2012
| {{flagu|Australia}} <br> {{flagu|South Australia}}
| South Australia planned to convert its suburban ([[Rail gauge in Australia#Gauges used|broad gauge]]) network to standard gauge in 2012, in conjunction with proposed electrification works. The [[Outer Harbor and Port Dock lines|Outer Harbor]] and [[Belair line|Belair]] lines were rebuilt with gauge convertible sleepers and re-sleepering of the [[Gawler line]] commenced in 2010. The [[Seaford line]] was to commence once the Gawler line was completed.<ref name=rr>{{cite web
|url=http://www.infrastructure.sa.gov.au/RR
|title=Rail Revitalisation|access-date=2008-08-25
|publisher=South Australian Department of Transport, Energy and Infrastructure.}}</ref> However, both gauge conversion and electrification works were suspended due to funding constraints, with work unlikely to proceed for the foreseeable future.{{Update inline|date=May 2022}}{{Citation needed|date=May 2022}}
|-
!style="background-color:#5abf56;"| {{RailGauge|1600mm}} (temporary)
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1950s
| {{flagu|Australia}} <br> {{flagu|South Australia}}
| The [[Mount Gambier railway line|Mount Gambier line]] in South Australia was fitted with some 3-gauge steel sleepers when it was "temporarily" converted,{{Ambiguous|reason=Was the entire line re-sleepered? Did standard gauge trains run? |date=May 2022}} pending later proposed conversion to {{RailGauge|1435mm}} (which did not occur, the line being abandoned instead).{{Citation needed|date=May 2022}}
|-
!style="background-color:#5abf56;"|            {{RailGauge|1600mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1927
| {{flagu|Australia}} <br> {{flagu|South Australia}}
| The break of gauge between the broad and narrow gauge lines moved to [[Hamley Bridge]] "only" 78km short of [[Adelaide]] and [[Port Adelaide]]. The narrow gauge train could reach this break of gauge after travelling 1260km from [[Alice Springs]].
|-
!style="background-color:#568dd0;"|{{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| Proposed
| {{flagu|Australia}} <br> {{flagu|Western Australia}}
| In [[Western Australia]], the narrow-gauge iron ore railways serving [[Geraldton]] port and the new port at [[Oakajee]] will be designed for ease of conversion to [[standard gauge]].<ref>{{cite web |url=http://www.mml.net.au/irm/content/projects_oakajee.html |title=Murchison Metals Ltd – Projects : Oakajee Port and Rail |publisher=Mml.net.au |access-date=6 May 2012 |url-status=dead |archive-url=https://web.archive.org/web/20120321013859/http://www.mml.net.au/irm/content/projects_oakajee.html |archive-date=21 March 2012 }}</ref>{{Update inline|date=May 2022}}
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#5abf56;"| {{RailGauge|1600mm}}
| 2016–present<!-- Please change the present to the year when the Murray Rail Basin Project is complete, and update the description as well -->
| {{flagu|Australia}} <br> {{flagu|Victoria}}
| In [[Victoria (Australia)|Victoria]], several wheat lines amounting to about {{convert|1100|km|abbr=on}} of track, were (or are to be) converted to [[standard gauge]], including:<ref>[[Railway Digest]], October 2015, pg 36</ref> [[Maryborough, Victoria|Maryborough]] to [[Mildura]], [[Yelta, Victoria|Yelta]] and [[Murrayville, Victoria|Murrayville]]; [[Sea Lake]] and [[Manangatang]]. Lines will be converted to dual gauge between [[Gheringhap]] to [[Maryborough, Victoria|Maryborough]]. This is part of the [[Murray Basin Rail Project]].
|-
!style="background-color:#568dd0;"|            {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 2026s
| {{flagu|Australia}} <br> {{flagu|Queensland}}
| The [[Inland Rail|Inland Railway line]] from [[Melbourne]] to [[Brisbane]] of 1600 km length includes about 300 km of dual gauge that improves the curves and gradients of the original Brisbane to [[Toowoomba]] line. This dual gauge replaces the narrow gauge that was chosen to enable cheap 100m radius curves and 2% gradients.
|-
!style="background-color:#e1392f;"| {{RailGauge|900mm}}
!style="background-color:#c55e8d;"| {{track gauge|1000mm}}
|2008–2009
| {{Flag|Austria}}
| [[Pöstlingbergbahn]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#ff8a37;"| {{RailGauge|760mm}}
| 1961
| {{Flagu|Austria}}
| [[Tschagguns–Partenen railway]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#5abf56;"| {{RailGauge|1600mm}}
|1854–1855
| {{flag|Baden}}
| [[Grand Duchy of Baden State Railway]]
|-
!style="background-color:#bbdf94;"| {{RailGauge|1676mm}}
!style="background-color:#c55e8d;"| {{track gauge|1000mm}},<br />{{track gauge|2ft6in}},<br />{{track gauge|2ft}}
| ongoing
| {{Flag|Bangladesh}}
| Narrow gauge is being converted to dual gauge by installing broad gauge third rail. <br> Broad gauge is being converted to dual gauge by installing narrow gauge third rail. <br>
|-
!style="background-color:#ff8a37;"| {{RailGauge|762mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1898
| {{Flag|Barbados}}
| [[Barbados Railway]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#bbdf94;"| {{RailGauge|1676mm}}
| 1880s
| {{flag|Canada}}
| Numerous Provincial Gauge railways in Canada
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1881
| {{flagu|Canada}}
| [[Toronto, Grey and Bruce Railway]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1883
| {{flagu|Canada}} 
| [[Toronto and Nipissing Railway]] with [[Dual gauge|third rail]] stage.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#148a37;"| {{RailGauge|1524mm}}
| 1938
| {{flag|China|1928}} 
| Chinese–Russian-owned line<ref>{{cite news |url=http://nla.gov.au/nla.news-article56048082 |title=ABOUT BOOKS. |newspaper=[[The Morning Bulletin]] |location=Rockhampton, Qld. |date=6 October 1939 |access-date=2014-03-19 |page=9 |via=National Library of Australia}}</ref>
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#148a37;"| {{RailGauge|1524mm}}
|
| {{flagu|China|1928}} 
|[[South Manchuria Railway]], during the [[Russo-Japanese War]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
|
| {{flagu|China|1928}} 
|South Manchuria Railway, following the Russo-Japanese War
|-
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
|
| {{flag|Czech Republic}}
|[[Muzeum Průmyslových Železnic]]
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
| 1956
| {{flag|Democratic Republic of the Congo}}
| [[Kindu]] (Lualaba River port) – Kibombo – Kongolo – [[Kabalo]] (Lualaba River port and junction with Katanga line) – Nyunzu – Niemba – [[Kalemie]] (the port on Lake Tanganyika): This line was isolated meter gauge until 1955, when the gauge was changed for the connection with the Katanga line in 1956.
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#ff8a37;"| {{RailGauge|762mm}}
| 1932
| {{flagu|Democratic Republic of the Congo}}
| [[Matadi–Kinshasa Railway]] converted to {{railgauge|1067mm}} on new alignment.
|-
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|610mm}}
| 
| {{flagu|Democratic Republic of the Congo}}
| [[Mayumbe line]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
| 1924
| {{flag|Denmark}} 
| [[Skagen Line]] in Denmark
|-
|align=center|{{RailGauge|500mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
|
|{{Flag|France}}
| [[Chemin de Fer Touristique du Tarn]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#148a37;"| {{RailGauge|1520mm}}
| 1941
| {{flag|Nazi Germany|Nazi}} 
| Brest–Minsk<ref name=Stolfi>{{cite book| chapter-url=http://militera.lib.ru/h/stolfi/11.html |title=Hitler's Panzers East: World War II Reinterpreted |chapter=Chapter Eleven. German Logistics: Could the Germans Support an Advance into the Moscow-Gorki Space in the Summer of 1941? |last=Stolfi |first=Russel H. S.|url=http://militera.lib.ru/h/stolfi/index.html| access-date=1 December 2016 |location=Norman and London |publisher=University of Oklahoma Press |via=Military Literature |year=1991}}</ref>
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
| 1964/65
| {{flag|Germany}} 
| [[Zabergäu Railway]]
|-
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
| 2004
| {{flagu|Germany}} 
| [[Malente-Gremsmühlen–Lütjenburg railway]]
|-
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
| 2006
| {{flagu|Germany}} 
| {{ill|Waldheim–Kriebethal railway|de|Bahnstrecke Waldheim–Kriebethal}}
|-
!style="background-color:#bbdf94;"| {{RailGauge|1676mm}}
!style="background-color:#c55e8d;"| {{track gauge|1000mm}},<br />{{track gauge|2ft6in}},<br />{{track gauge|2ft}}
| ongoing
| {{Flag|India}}
| [[Project Unigauge]]
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
| 1923
| {{flag|Japan}}
| [[Iyo Railway]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color: #3e3d97;color:white"| 
{{RailGauge|1372mm}}
| 1959
| {{flag|Japan}}
| [[Keisei Electric Railway]]; converted for through-service into [[Toei Asakusa Line]]
|-

!style="background-color:#148a37;"| {{RailGauge|1520mm}}
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
|early 1970s
|{{Flag|Kazakh Soviet Socialist Republic}}
|[[Kokchetav]] network, {{convert|305|km|abbr=on}}, operational since 1954, partly regauged to [[Russian gauge]].<ref>{{cite web |url=http://www.home.versatel.nl/p.engelbert/KAZ-MPS.html |archive-url=https://web.archive.org/web/20160304062810/http://www.home.versatel.nl/p.engelbert/KAZ-MPS.html |archive-date=4 March 2016 |title=MPS-lines in Kazakhstan (part 1)}}</ref>
|-
!style="background-color:#c55e8d;"| {{track gauge|1000mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
|
| {{flag|Laos}}
| [[Don Det–Don Khon narrow-gauge railway]]
|-
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
|
| {{flag|Latvia}}
| [[Liepāja]]–[[Rucava]] line, 52&nbsp;km military line
|-
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
|
| {{Flag|Lithuania}}
| {{see|Narrow-gauge railways in Lithuania}}
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
| 1950s
| {{flag|Yugoslavia}}:<br />{{Flag|North Macedonia}}
| [[Ohrid line]]
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|610mm}}
| 1910
| {{flag|Mozambique}} / {{flag|Zimbabwe}}
| [[Beira Railroad Corporation|Beira–Salisbury]]
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
| 1950
| {{flag|Namibia}}
| [[Moçâmedes Railway]]
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
| 1915–1961
| {{flagu|Namibia}}
| [[Otavi Mining and Railway Company]]
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
| 1910–
| {{flagu|Namibia}}
| [[Swakopmund–Windhoek line]]
|-
!style="background-color:#e1392f;"| {{RailGauge|914mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|610mm}}
| 1920
| {{Flag|Nauru}}
| [[Rail transport in Nauru]]
|-
!style="background-color:#bbdf94;"| {{RailGauge|1676mm}}
!style="background-color:#ff8a37;"| {{RailGauge|762mm}}
| 2018
| {{Flag|Nepal}}
| Jaynagar–Janakpur railway was regauged.
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#5abf56;"| {{RailGauge|1600mm}}
|
| {{flag|New Zealand}}
| [[Canterbury Provincial Railways]]
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#ff8a37;"| {{RailGauge|762mm}}
| 1912–1914
| {{flag|Nigeria}} 
| [[Bauchi Light Railway]]
|-
|
| 
| 
| {{flagu|Nigeria}} 
| [[Port Harcourt]] – [[Onne]], convertible sleepers installed since gauge conversion not imminent.
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
| 1915
| {{flag|Norway}} 
| [[Sulitjelma Line]] converted from {{RailGauge|750mm}} to dual gauge with {{RailGauge|1067mm}} and when later closed was converted to a road.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1922
| {{flagu|Norway}} 
| [[Skøyen–Filipstad Line]]
|-
!style="background-color:#568dd0;"           | {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1922
| {{flagu|Norway}} 
| [[Trondhjem–Støren Line]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1935
| {{flagu|Norway}} 
| [[Arendal Line]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1944
| {{flagu|Norway}} 
| [[Ålgård Line]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1941
| {{flagu|Norway}} <br> {{flagu|Nazi Germany|Nazi}}
| [[Røros Line]] in occupied Norway converted by German forces.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1949
| {{flagu|Norway}} 
| [[Vestfold Line|Grevskap Line]] in Norway
|-
!style="background-color:#bbdf94;"| {{RailGauge|1676mm}}
!style="background-color:#c55e8d;"| {{track gauge|1000mm}},<br />{{track gauge|2ft6in}},<br />{{track gauge|2ft}}
| 2000
| {{Flag|Pakistan}}
| All narrow-gauge tracks in Pakistan were re-gauged or were dismantled.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#148a37;"| {{RailGauge|1524mm}}
| 2001
| {{flag|Panama}} 
| The [[Panama Canal Railway|Panama Canal Railroad]], by then in a dilapidated state, was reconstructed and relaid.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#e1392f;"| {{RailGauge|914mm}}
| 2009
| {{flag|Peru}} 
| [[Transport in Peru|Peru]] from [[Huancayo]] to [[Huancavelica]]; {{convert|147|km|abbr=on}}.<ref>[[Trains (magazine)|Trains]], March 2009, p68</ref><ref>{{cite news |url=http://www.railjournal.com/index.php/freight/high-hopes-for-perus-andean-railway.html |title=High hopes for Peru's Andean railway |first=Keith |last=Fender |work=International Railway Journal |location=US |date=8 December 2015 |access-date=1 December 2016}}</ref> 
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 2019–ongoing
| {{flag|Philippines}} 
| The [[Philippine National Railways]] is reconstructing its dilapidated narrow-gauge network to standard gauge.<ref>{{Cite web |first=Keith |last=Barrow |title=Philippines adopts standard gauge for new lines |url=https://www.railjournal.com/regions/asia/philippines-adopts-standard-gauge-for-new-lines/ |work=International Rail Journal |date=9 August 2016 |accessdate=15 February 2021 }}</ref><ref>{{Cite news |first=Cai |last=Ordinario |title=Neda says 104 flagship projects ready for implementation next year |url=https://businessmirror.com.ph/2020/09/18/neda-says-104-flagship-projects-ready-for-implementation-next-year/ |work=BusinessMirror |date=18 September 2020 |accessdate=15 February 2021 }}</ref>
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#148a37;"| {{RailGauge|1524mm}}
| after 1918
| {{flag|Poland}}
| In part of Poland under Russian control ([[Russian Partition]]), some railways were Russian broad gauge. These were converted to standard gauge after Poland gained independence, to unify the national system.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
|1924
| {{Flagu|Poland}}
| World War I field railway connecting [[Nasielsk railway station|Nasielsk]] and [[Sierpc railway station|Sierpc]], 88&nbsp;km long.
|-
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
|1932
| {{Flagu|Poland}}
| World War I field railway from [[Dūkštas]] to [[Druya]]. After the occupation of the [[Vilnius Region]] by Poland, the [[Polish State Railways|PKP]] regauged the line.<ref>{{cite web |title=Linia Dukszty - Druja |url=http://www.archeo.kolej.pl/maron/dukszty.htm |language=pl}}</ref> After World War&nbsp;II the majority of the line ended up in [[Belorussian SSR]] and closed in the 1970s.<ref>{{cite web |url=http://home.zonnet.nl/p.engelbert/BY.html |archive-url=https://web.archive.org/web/20160303203343/http://home.zonnet.nl/p.engelbert/BY.html |archive-date=3 March 2016 |title=The TU2 pages}}</ref>
|-
!style="background-color:#83dc76;"|{{RailGauge|1668mm}}
|align=center|{{RailGauge|1664mm}}
| 19th century
| {{flag|Portugal|1830}} 
| 
|-
!style="background-color:#83dc76;"| {{RailGauge|1668mm}}
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
| 2004
| {{flagu|Portugal}} 
| The [[Guimarães line]] in Portugal was electrified and converted from metre gauge to Iberian broad gauge in 2004.
|-
!style="background-color:#148a37;"| {{RailGauge|1520mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 2003-2019
| {{flag|Russia}}
| The [[Sakhalin Railway|railways of Sakhalin Island]] were converted in sections, first laying the third (outer) rail, making rail lines usable by both Japanese- and Russian-gauge trains. Once the railways throughout the island have been converted to the Russian gauge (by 2012), the inner rail was removed.<ref>[http://infojd.ru/11/sahjd.html Сахалинская узкоколейная железная дорога (The narrow-gauge railways of Sakhalin)] {{webarchive|url=https://archive.today/20131115033833/http://sbchf.narod.ru/11/sahjd.html |date=15 November 2013 }} {{in lang|ru}}</ref>
|-
|
|
| –1918
| {{flag|Russian Empire}} <br> {{flag|German Empire}}
| World War I as fronts and borders changed
|-
|
|
| –1945
| {{flag|Soviet Union}} <br> {{flagu|Nazi Germany}}
| World War II as fronts and borders changed
|-
!style="background-color:#148a37;"| {{RailGauge|1524mm}}
!style="background-color:#dceba3;"| {{RailGauge|6ft|first=met}}
| 1897
| {{flagu|Russian Empire|1858}}
| [[Tsarskoye Selo Railway|The first railway in Russia]] connecting [[Saint Petersburg]] to [[Tsarskoye Selo]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| (proposed)
| {{flag|Sierra Leone}} 
|[[Port Pepel]] iron ore line, derelict<ref>{{cite web| url = http://allafrica.com/stories/200805191261.html| url-status = dead| archive-url = https://web.archive.org/web/20081024151052/http://allafrica.com/stories/200805191261.html| archive-date = 2008-10-24| title = allAfrica.com: Sierra Leone: African Minerals to Boost Bunbuna Hydro (Page 1 of 1)}} </ref>
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|610mm}}
|
| {{Flag|South Africa}}
| {{see|Two-foot-gauge railways in South Africa}}
|-
!style="background-color:#83dc76;"|{{RailGauge|1668mm}}
|align=center|{{RailGauge|1672mm}}
| 19th century
| {{flag|Spain|1874}} 
| 
|-
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1976
| {{flagu|Spain}} 
| The line from [[Cartagena–Los Nietos line|Cartagena to Los Blancos]] was converted at the same time it was extended to Los Nietos.<ref>Ferropedia – Ferrocarril Cartagena – Los Nietos, http://ferropedia.es/wiki/Ferrocarril_Cartagena_-_Los_Nietos</ref>
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#83dc76;"| {{RailGauge|1668mm}}
| 2000s
| {{flagu|Spain}} 
| Spain is building its high-speed lines to standard gauge, even though the existing system is Iberian; new cutoff lines are being built with gauge-convertible sleepers.
|-
!style="background-color:#bbdf94;"| {{RailGauge|1676mm}}
!style="background-color:#ff8a37;"| {{RailGauge|762mm}}
| 1996
| {{Flag|Sri Lanka}}
| The only narrow-gauge lines in Sri Lanka: [[Kelani Valley line]] was regauged while the {{Track gauge|762mm}} [[Uda Pussellawa railway]] was dismantled.
|-
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
| 1960s
| {{flag|Sweden}}
| The [[Östra Södermanlands Järnväg]] railway in [[Mariefred]] mostly runs on tracks which were converted from standard gauge when it was remade into a heritage railway in the 1960s.
|-
!style="background-color:#e1392f;"| {{RailGauge|891mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
| 1934
| {{flagu|Sweden}} 
| The short and isolated standard gauge tram line Långängsbanan built in 1911 in the northern [[Stockholm]] suburb of [[Stocksund]], was converted to the narrow {{RailGauge|891mm|al=on}} of the adjacent [[Roslagsbanan|Roslag Railway]] in 1934. Långängsbanan was closed in 1966.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#e1392f;"| {{RailGauge|891mm}}
| 1973-1978
| {{flagu|Sweden}} 
| The railway between [[Kalmar]] and [[Berga]] was converted during the 1970s.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#e1392f;"| {{RailGauge|891mm}}
| 1972
| {{flagu|Sweden}} 
| The railway between [[Sandbäckshult]] and [[Mönsterås]] was converted between 1970 and 1972. In Sandbäckshult, the line connects to the Kalmar-Berga line. Both were converted to facilitate standard gauge transport to the pulp mill in Mönsterås.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#e1392f;"| {{RailGauge|891mm}}
| 1953-1962
| {{flagu|Sweden}} 
| [[Kinnekulle Line]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#5abf56;"| {{RailGauge|1600mm}}
|1854
| {{flag|Switzerland}}
| [[Swiss Northern Railway]]
|-
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
| 2022
| {{flag|Switzerland}}
| [[Waldenburg Railway]] Being converted as part of a modernisation of the line.
|-
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
|2010
| {{flag|Switzerland}}
| [[Swiss National Railway]] The former Nationalbahn line from Aarau to Suhr was converted to metre gauge to allow replacement of a street running section on the [[Menziken–Aarau–Schöftland railway line]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
|align=center| {{RailGauge|1050mm}}
| (proposed)
| {{flag|Syria}}
| [[Hejaz Railway]]
|-
|
|
|
| {{flag|Tanzania}}
| [[Tanzania]] in 2008 is proposed {{track gauge|1000mm}}/{{track gauge|1067mm|lk=on}} steel sleepers and {{track gauge|1000mm}}/{{track gauge|1435mm}} concrete sleepers to suit gauge conversion.
|-
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
| 1920 onward
| {{flag|Thailand}} 
| From 1920, the standard gauge part of the [[Rail transport in Thailand|Siam railway]] amounting to {{convert|1000|km|abbr=on}} was converted first to [[Dual gauge|third rail]], and then to {{RailGauge|1000mm}} ([[metre gauge]]) making the whole system metre gauge.<ref>{{cite web |url=http://nla.gov.au/nla.news-article17485953 |title=Break of Gauge – Letters to the Editor |work=The Sydney Morning Herald |location=Australia |via=Trove – National Library of Australia |date=13 June 1938 |access-date=1 June 2016}}</ref>
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#c55e8d;"| {{RailGauge|1000mm}}
| (proposed)
| {{flag|Tunisia}}
|Tunis - Sfax Line
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#148a37;"| {{RailGauge|1520mm}}
| 1920s
| {{flag|Turkey}}
| [[Kars–Gyumri–Tbilisi railway]]
|-
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
!style="background-color:#ff8a37;"| {{RailGauge|760mm}}
| 1948–1949
| {{flag|Ukrainian Soviet Socialist Republic}}
|Beregovo region network, around {{convert|200|km|abbr=on}}; initially built during the Hungarian Empire and regauged when Ukraine became part of the Soviet Union.<ref name="MPS">{{cite web |url=http://www.home.versatel.nl/p.engelbert/UA-MPS.html |archive-url=https://web.archive.org/web/20160303221103/http://www.home.versatel.nl/p.engelbert/UA-MPS.html |title=MPS lines in Carpathian Ukraine |archive-date=2016-03-03}}</ref>
|-
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
!style="background-color:#ff8a37;"| {{RailGauge|760mm}}
| 
| {{flagu|Ukrainian Soviet Socialist Republic}}
|Uzhhorod region, {{convert|35|km|abbr=on}}.<ref name=MPS />
|-
!style="background-color:#ff8a37;"| {{RailGauge|750mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
| 
| {{flagu|Ukrainian Soviet Socialist Republic}}
|Vapniarka railways, {{convert|140|km|abbr=on}}.
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#148a37;"| {{RailGauge|1524mm}}
| 1844
| {{flag|United Kingdom}}:<br />{{flag|England}} 
| The [[Eastern Counties Railway]], constructed in 1839 and the connecting [[Northern and Eastern Railway]], constructed in 1840.
|-
!style="background-color:#E5C4A1;"| {{RailGauge|610mm}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
|
| {{flagu|United Kingdom}}:<br />{{flag|Wales}}
| [[Eigiau Tramway#Eigiau Reservoir Tramway|Eigiau Reservoir Tramway]]
|-
!style="background-color:#b0b0b0;"| {{RailGauge|381mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|610mm}}
|1916
| {{flagu|United Kingdom}}:<br />{{flagu|Wales}}
| [[Fairbourne Railway]]
|-
|align=center|{{RailGauge|12.25in|first=met}}
!style="background-color:#b0b0b0;"| {{RailGauge|381mm}}
|1986
| {{flagu|United Kingdom}}:<br />{{flagu|Wales}}
| Fairbourne Railway
|-
!style="background-color:#E5C4A1;"| {{RailGauge|610mm}}
!style="background-color:#e1392f;"| {{RailGauge|914mm}}
|1986
| {{flagu|United Kingdom}}:<br />{{flagu|Wales}}
| [[Gorseddau Junction and Portmadoc Railway]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#dceba3;"| {{Track gauge|7ft0.25in|addcat=no|lk=on|first=met}}
| 1892
| {{flagu|United Kingdom}}:<br />{{flagu|England}} / {{flagu|Wales}}
| [[Great Western Railway]]
|-
!style="background-color:#E5C4A1;"| {{RailGauge|600mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|23.5in|first=met}}
| 
| {{flagu|United Kingdom}}:<br />{{flagu|England}}
| [[Lynton and Barnstaple Railway]]
|-
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
!style="background-color:#E5C4A1;"| {{RailGauge|23.5in|first=met}}
| 2002
| {{flagu|United Kingdom}}:<br />{{flagu|England}}
| [[Southport Pier Tramway]]
|-
!style="background-color:#E5C4A1;"| {{RailGauge|23.5in|first=met}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1950
| {{flagu|United Kingdom}}:<br />{{flagu|England}}
| Southport Pier Tramway
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#dceba3;"| {{Track gauge|7ft0.25in|addcat=no|lk=on|first=met}}
| 1872
| {{flagu|United Kingdom}}:<br />{{flagu|Wales}}
| [[Teifi Valley Railway]]
|-
!style="background-color:#E5C4A1;"| {{RailGauge|23.75in|first=met}}
!style="background-color:#E5C4A1;"| {{RailGauge|23.5in|first=met}}
| 1901–1902
| {{flagu|United Kingdom}}:<br />{{flagu|Wales}}
| [[Vale of Rheidol Railway]]
|-
|align=center| {{RailGauge|2ft8.5in|first=met}}
!style="background-color:#E5C4A1;"| {{RailGauge|610mm}}
| 1884
| {{flagu|United Kingdom}}:<br />{{flagu|England}}
| [[Volk's Electric Railway]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
|align=center| {{RailGauge|58in|first=met}}
| 1866
| {{flagu|United States}}<br />{{flag|New Jersey}} 
| [[Morris and Essex Railroad|Morris and Essex]] converted in 12 days<ref>https://timesmachine.nytimes.com/timesmachine/1866/07/03/90433709.pdf ''The New York Times'', 3 July 1866</ref>
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#bbdf94;"| {{RailGauge|1676mm}}
| 1911<ref>{{cite book |last1=Hanson |first1=Erle C. |title=Monterey & Pacific Grove Street Car Era |date=1990 |publisher=[[Interurban Press]] |location=[[Glendale, California]] |isbn=0-916374-91-2 |ol=OL1876952M |page=42}}</ref>
| {{flagu|United States}}<br />{{flag|Maine}} 
| [[Maine Central Railroad Company]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#e1392f;"| {{RailGauge|914mm}}
| 1879
| {{flagu|United States}}<br />{{flag|California}} 
| [[Monterey Branch Line]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#e1392f;"| {{RailGauge|3ft2in|first=met}}
| 1879
| {{flagu|United States}}<br />{{flag|California}} 
| [[Monterey and Pacific Grove Railway]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#e1392f;"| {{RailGauge|914mm}}
| 1881
| {{flagu|United States}}<br />{{flag|Colorado}} 
| Denver to Pueblo on [[Denver and Rio Grande Western|Denver &amp; Rio Grande Railroad]].<ref>{{cite book| title=Colorado Railroads| chapter=Part II – Expansion And Consolidation| author=Wilkins, Tivis (Tiv) E.| publisher=Pruett Publishing Company| year=1974}}</ref> This began a progressive and gradual conversion to standard gauge across Colorado, wherever the traffic justified the conversion
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#148a37;"| {{RailGauge|1524mm}}
| 1886
| {{flagu|United States}} 
| ''[[AN ACT to establish the gauge of the Pacific railroad and its branches.]]''<ref>{{cite web|url=http://www.cprr.org/Museum/Pacific_Railroad_Acts.html#1863|title=An act to establish the gauge of the Pacific railroad and its branches |publisher=Congress |location=US |via=Central Pacific Railroad Photographic History Museum |date=1 March 1863 |access-date=1 June 2016}}</ref> set the standard for the [[First transcontinental railroad]] and encouraged previously laid lines to regauge. Southern railroads were not converted until 1886<ref>{{Cite web|url=http://southern.railfan.net/ties/1966/66-8/gauge.html|title = The Days They Changed the Gauge}}</ref> when they were regauged to 1448&nbsp;mm (4&nbsp;ft 9&nbsp;in). This was functionally compatible with standard gauge, final conversions taking place as track was maintained.{{main|Track gauge in the United States#Towards standardization}}
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#148a37;"| {{RailGauge|1524mm}}
| 1906
| {{flagu|United States}}<br />{{flag|California}}
| [[Market Street Railway (transit operator)|Market Street Railway]] [[19 Polk|Polk cable car]] rebuilt as standard gauge electric trolley following the [[1906 San Francisco earthquake]]<ref>{{cite book |last1=Smallwood |first1=Charles A. |title=The White Front Cars of San Francisco |date=1978 |publisher=Interurbans |isbn=9780916374327 |url=https://openlibrary.org/books/OL4750365M/The_white_front_cars_of_San_Francisco |page=120|ol=4750365M }}</ref>
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1898
| {{flagu|United States}}<br />{{flag|California}}
| [[San Diego Electric Railway]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#e1392f;"| {{RailGauge|914mm}}
| 1902
| {{flagu|United States}}<br />{{flag|Iowa}} 
| [[Burlington and Northwestern Railway]]
|-
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
!style="background-color:#6a51b7;color:white"| {{RailGauge|1067mm}}
| 1906
| {{flagu|United States}}<br />{{flag|California}}
| [[Venice Short Line]] when sold from the [[Los Angeles Pacific Railroad]] to the [[Pacific Electric]]
|-
!style="background-color:#1e407c;color:white"| {{RailGauge|pennsylvania|first=met}}
!style="background-color:#568dd0;"| {{RailGauge|1435mm}}
| 1997
| {{flagu|United States}}<br />{{flag|Louisiana}}
| The [[Riverfront Streetcar Line]] of the [[Streetcars in New Orleans|New Orleans streetcar system]] was converted to conform with the rest of the [[historic streetcar]] system.
|-
!style="background-color:#568dd0;"| {{track gauge|1435mm}}
!style="background-color:#148a37;"| {{track gauge|1520mm}}
|
| [[Central Asia]]
| While China and Europe are connected by rail, and while both are mainly {{track gauge|1435mm}}, the intervening Central Asia Railways are {{track gauge|1520mm|lk=on}} gauge.  There are discussions about facilitating an eventual linkage of the Chinese and European [[standard gauge]] system. {{see|Eurasian Land Bridge}}
|}

== See also ==
{{Portal|Trains}}
* [[Break-of-gauge]]

== References ==
{{reflist}}

{{Navbox track gauge}}

[[Category:Track gauges]]
[[Category:Rail transport-related lists|Track]]