Ancient Egyptian units of measurement
Template:Short descriptionThe ancient Egyptian units of measurement are those used by the dynasties of ancient Egypt prior to its incorporation in the Roman Empire and general adoption of Roman, Greek, and Byzantine units of measurement. The units of length seem to have originally been anthropic, based on various parts of the human body, although these were standardized using cubit rods, strands of rope, and official measures maintained at some temples.
Following Alexander the Great's conquest of Persia and subsequent death, his bodyguard and successor Ptolemy assumed control in Egypt, partially reforming its measurements, introducing some new units and hellenized names for others.
Length
Egyptian units of length are attested from the Early Dynastic Period. Although it dates to the 5th dynasty, the Palermo stone recorded the level of the Nile River during the reign of the Early Dynastic pharaoh Djer, when the height of the Nile was recorded as 6 cubits and 1 palmTemplate:Sfn (about Script error: No such module "convert".). A Third Dynasty diagram shows how to construct an elliptical vault using simple measures along an arc. The ostracon depicting this diagram was found near the Step Pyramid of Saqqara. A curve is divided into five sections and the height of the curve is given in cubits, palms, and digits in each of the sections.[1] [2]
At some point, lengths were standardized by cubit rods. Examples have been found in the tombs of officials, noting lengths up to remen. Royal cubits were used for land measures such as roads and fields. Fourteen rods, including one double-cubit rod, were described and compared by Lepsius.Template:Sfnp Two examples are known from the Saqqara tomb of Maya, the treasurer of Tutankhamun. Another was found in the tomb of Kha (TT8) in Thebes. These cubits are about Script error: No such module "convert". long and are divided into palms and hands: each palm is divided into four fingers from left to right and the fingers are further subdivided into ro from right to left. The rulers are also divided into hands[3] so that for example one foot is given as three hands and fifteen fingers and also as four palms and sixteen fingers.[4][2][5][6][7][3]
Surveying and itinerant measurement were undertaken using rods, poles, and knotted cords of rope. A scene in the tomb of Menna in Thebes shows surveyors measuring a plot of land using rope with knots tied at regular intervals. Similar scenes can be found in the tombs of Amenhotep-Sesi, Khaemhat and Djeserkareseneb. The balls of rope are also shown in New Kingdom statues of officials such as Senenmut, Amenemhet-Surer, and Penanhor.[1]
| Names | Equivalents | ||||||
|---|---|---|---|---|---|---|---|
| English | Egyptian | Coptic | Palms | Digits | MetricTemplate:Refn | ||
| Digit[8] Finger[9] Fingerbreadth[8] Tebā[10] |
<hiero>D50</hiero>Template:Efn | ḏbꜥ | Script error: No such module "Lang".Template:Sfnp[11] | tēēbe | Template:1/4 | 1 | 1.875 cm |
| Palm[8] Hand[12] Shesep[13] |
<hiero>D48</hiero>Template:Efn | šsp | Script error: No such module "Lang".Template:Sfnp[11] Script error: No such module "Lang".Template:Sfnp Script error: No such module "Lang".Template:Sfnp Script error: No such module "Lang".Template:Sfnp |
shop shoop shōp shap |
1 | 4 | 7.5 cm |
| Hand[14] Handsbreadth[13] |
<hiero>D46</hiero>Template:Efn | ḏrt | Script error: No such module "Lang".Template:Sfnp[15] | hōhf | <templatestyles src="Fraction/styles.css" />1+1⁄4 | 5 | 9.38 cm |
| Fist[13] | <hiero>D49</hiero>Template:Efn | ḫfꜥ[13] ꜣmm[16] |
ϭⲁϫⲙⲏTemplate:Sfnp ϫⲁⲙⲏTemplate:Sfnp |
qajmē jamē |
<templatestyles src="Fraction/styles.css" />1+1⁄2 | 6 | 11.25 cm |
| Double Handbreadth[16] | <hiero>D48:D48</hiero>Template:Efn | šspwy | 2 | 8 | 15Script error: No such module "String".cm[16] | ||
| Small Span[13] Pedj-Sheser Shat Nedjes[13] Little Shat[9] |
<hiero>H7-G37</hiero> | pḏ šsr šꜣt nḏs[13] |
Script error: No such module "Lang".Template:Sfnp[15] Script error: No such module "Lang".Template:Sfnp |
rtō ertō |
3 | 12 | 22.5 cm |
| Great Span[13] Half-Cubit[16] Pedj-Aa Shat Aa[13] Great Shat[9] |
<hiero>H7-O29</hiero>Template:Efn | pḏ ꜥꜣ[13][16] šꜣt ꜥꜣ[13] |
<templatestyles src="Fraction/styles.css" />3+1⁄2 | 14 | 26 cm | ||
| Foot Djeser[13] Ser[10] Bent Arm[13] |
<hiero>D45</hiero> | ḏsr | 4 | 16 | 30 cm | ||
| Shoulder Remen[13] Upper Arm[13] |
<hiero>D41</hiero> | rmn | 5 | 20 | 37.5 cm | ||
| Small Cubit[14] Short Cubit[13] Meh Nedjes[13] |
<hiero>D42-G37</hiero> | mḥ nḏs mḥ šsr |
Script error: No such module "Lang".[17][11] Script error: No such module "Lang".Template:Sfnp |
mahe mehi |
6 | 24 | 45 cm |
| Cubit Royal Cubit[13] Sacred Cubit[12] Meh Nesut[8] Meh Nisut[13] Mahi Ell[17] |
<hiero>D42</hiero>Template:Efn | mḥ | 7 | 28 | 52.3Script error: No such module "String".cm[8] 52.5Script error: No such module "String".cm[12] | ||
| Pole Nebiu[18] |
<hiero>N35:D58-M17-V1-T19</hiero> | nbiw | 8 | 32 | 60 cm | ||
| Rod Rod of Cord Stick of Rope[14] Khet[8] Schoinion[19] |
<hiero>W24-G43-V28</hiero>Template:Efn | ḫt | Script error: No such module "Lang".Template:Sfnp Script error: No such module "Lang".Template:Sfnp |
hōte hōti |
100 cubits[8] | 52.5 m[19] | |
| Schoenus[16] River-Measure League[16] Ater[8] Iter[14] or Iteru[16] |
<hiero> M17-X1:D21-G43-N35B-N36:N21*Z1</hiero>Template:Efn | i͗trw | ϣϥⲱTemplate:Sfnp ϣⲃⲱTemplate:Sfnp |
shfō shvō |
20,000 cubits[8] | 10.5 km[8] | |
The digit was also subdivided into smaller fractions of Template:1/2, Template:1/3, Template:1/4, and <templatestyles src="Fraction/styles.css" />1⁄16.[20] Minor units include the Middle Kingdom reed of 2 royal cubits,Template:Efn the Ptolemaic xylon (Template:Langx, lit.Script error: No such module "String"."timber") of three royal cubits,[21][22] the Ptolemaic fathom (Template:Langx, orgyiá; Template:Langx; Template:Langx, hpot) of four lesser cubits,[23] and the kalamos of six royal cubits.[12]
Area
Records of land area also date to the Early Dynastic Period. The Palermo stone records grants of land expressed in terms of kha and setat. Mathematical papyri also include units of land area in their problems. For example, several problems in the Moscow Mathematical Papyrus give the area of rectangular plots of land in terms of setat and the ratio of the sides and then require the scribe to solve for their exact lengths.[4]
The setat was the basic unit of land measure and may originally have varied in size across Egypt's nomes.[14] Later, it was equal to one square khet, where a khet measured 100 cubits. The setat could be divided into strips one khet long and ten cubit wide (a kha).[1][4][24]
During the Old Kingdom:
| Names | Equivalents[25] | ||||||
|---|---|---|---|---|---|---|---|
| English | Egyptian | Coptic | Setat | Square Cubits |
Metric | ||
| Sa[14] Eighth |
<hiero>G39</hiero> | zꜣ | <templatestyles src="Fraction/styles.css" />1⁄800 | <templatestyles src="Fraction/styles.css" />12+1⁄2 | 3.4456Script error: No such module "String".m2 | ||
| Heseb Fourth Account Unit[14] |
<hiero>Z9</hiero> | ḥsb | <templatestyles src="Fraction/styles.css" />1⁄400 | 25 | 6.8913Script error: No such module "String".m2 | ||
| Remen Half Shoulder[14] |
<hiero>D41</hiero> | rmn | <templatestyles src="Fraction/styles.css" />1⁄200 | 50 | 13.783Script error: No such module "String".m2 | ||
| Ta Khet[25] Cubit[26] Cubit of Land[26] Land Cubit[16] Ground Cubit[26] Cubit Strip[26] Land Unit[14] |
<hiero>N17</hiero>Template:Efn | tꜣ ḫt mḥ mḥ itn |
Script error: No such module "Lang".Template:Sfnp[15] | jise | <templatestyles src="Fraction/styles.css" />1⁄100 | 100[25] | 27.565Script error: No such module "String".m2 |
| Kha Thousand[14] |
<hiero>M12</hiero> | ḫꜣ | <templatestyles src="Fraction/styles.css" />1⁄10 | 1,000 | 275.65Script error: No such module "String".m2 | ||
| Setat[25] Setjat[25] Aroura[25] Square Khet[25] |
<hiero>s t-F29-t:Z4</hiero>Template:Efn | sṯꜣ[19] sṯꜣt[25] |
Script error: No such module "Lang".Template:Sfnp[15] Script error: No such module "Lang".Template:Sfnp[15] |
sōt steiōhe |
1 | 10,000 | 2,756.5Script error: No such module "String".m2 |
During the Middle and New Kingdom, the "eighth", "fourth", "half", and "thousand" units were taken to refer to the setat rather than the cubit strip:
| Sa Eighth |
<hiero>G39</hiero>Template:Efn | sꜣ | <templatestyles src="Fraction/styles.css" />1⁄8 | 1,250 | 345Script error: No such module "String".m2 | ||
| Heseb Fourth |
<hiero>Z9</hiero>Template:Efn | hsb r-fdw |
Template:1/4 | 2,500 | 689Script error: No such module "String".m2 | ||
| Gs Remen Half |
<hiero>Aa13</hiero>Template:Efn | gs | Script error: No such module "Lang".[15] | rermē | Template:1/2 | 5,000 | 1378Script error: No such module "String".m2 |
| Kha Thousand |
<hiero>M12</hiero>Template:Efn | ḫꜣ ḫꜣ tꜣ |
10 | 100,000 | 2.76Script error: No such module "String".ha |
During the Ptolemaic period, the cubit strip square was surveyed using a length of 96 cubits rather than 100, although the aroura was still figured to compose 2,756.25Script error: No such module "String".m2.[12] A 36Script error: No such module "String".squareScript error: No such module "String".cubit area was known as a kalamos and a 144Script error: No such module "String".squareScript error: No such module "String".cubit area as a hamma.[12] The uncommon bikos may have been <templatestyles src="Fraction/styles.css" />1+1⁄2Script error: No such module "String".hammata or another name for the cubit strip.[12] The Coptic shipa (Script error: No such module "Lang".) was a land unit of uncertain value, possibly derived from Nubia.Template:Sfnp
Volume
Units of volume appear in the mathematical papyri. For example, computing the volume of a circular granary in RMPScript error: No such module "String".42 involves cubic cubits, khar, heqats, and quadruple heqats.[4][7] RMPScript error: No such module "String".80 divides heqats of grain into smaller henu.
| Names | Equivalents | ||||
|---|---|---|---|---|---|
| English | Egyptian | Heqats | Ro | Metric | |
| Ro | <hiero>r</hiero> | r | <templatestyles src="Fraction/styles.css" />1⁄320 | 1 | 0.015Script error: No such module "String".L |
| Dja | dja | <templatestyles src="Fraction/styles.css" />1⁄16 | 20[27] | 0.30Script error: No such module "String".L | |
| Jar Hinu |
<hiero>h-n:W24*V1-W22</hiero> | hnw | <templatestyles src="Fraction/styles.css" />1⁄10 | 32 | 0.48Script error: No such module "String".L |
| Barrel Heqat Hekat |
<hiero>U9</hiero> | hqt | 1 | 320 | 4.8Script error: No such module "String".L |
| DoubleScript error: No such module "String".Barrel Double Heqat Double Hekat |
hqty | 2 | 640 | 9.6Script error: No such module "String".L | |
| Quadruple HeqatScript error: No such module "String".(MK)[28] Oipe[29] (NK)[28] |
<hiero>T14-U9</hiero> <hiero>-i-p:t-U9-</hiero> |
hqt-fdw jpt[14] ipt[28] |
4 | 1,280 | 19.2Script error: No such module "String".L |
| Sack Khar |
<hiero>Aa1:r</hiero> | khar | 20Script error: No such module "String".(MK) 16Script error: No such module "String".(NK)[30] |
6,400Script error: No such module "String".(MK) 5120Script error: No such module "String".(NK) |
96.5Script error: No such module "String".LScript error: No such module "String".(MK) 76.8Script error: No such module "String".LScript error: No such module "String".(NK)[30] |
| Deny CubicScript error: No such module "String".cubit |
deny | 30 | 9,600 | 144Script error: No such module "String".L | |
The oipe was also formerly romanized as the apet.[31]
Weight
Weights were measured in terms of deben. This unit would have been equivalent to 13.6 grams in the Old Kingdom and Middle Kingdom. During the New Kingdom however it was equivalent to 91 grams. For smaller amounts the qedet (<templatestyles src="Fraction/styles.css" />1⁄10 of a deben) and the shematy (<templatestyles src="Fraction/styles.css" />1⁄12 of a deben) were used.[1][7]
| Names | Equivalents | |||
|---|---|---|---|---|
| English | Egyptian | Debens | Metric | |
| Piece Shematy |
shȝts | <templatestyles src="Fraction/styles.css" />1⁄12 | ||
| Qedet Kedet Kite |
<hiero>Aa28-X1:S106</hiero> | qdt | <templatestyles src="Fraction/styles.css" />1⁄10 | |
| Deben | <hiero>D46-D58-N35:F46</hiero> | dbn | 1 | 13.6 g (OK & MK) 91 g (NK) |
The qedet or kedet is also often known as the kite, from the Coptic form of the same name (Script error: No such module "Lang". or Script error: No such module "Lang".).Template:Sfnp In 19th-century sources, the deben and qedet are often mistakenly transliterated as the uten and kat respectively, although this was corrected by the 20th century.Template:Sfnp
Time
Script error: No such module "Labelled list hatnote". The former annual flooding of the Nile organized prehistoric and ancient Egypt into three seasons: Akhet ("Flood"), Peret ("Growth"), and Shemu or Shomu ("Low Water" or "Harvest").[32]Template:SfnpTemplate:Sfnp
The Egyptian civil calendar in place by Dynasty VTemplate:Sfnp followed regnal eras resetting with the ascension of each new pharaoh.[33] It was based on the solar year and apparently initiated during a heliacal rising of Sirius following a recognition of its rough correlation with the onset of the Nile flood.Template:Sfnp It followed none of these consistently, however. Its year was divided into 3 seasons, 12 months, 36 decans, or 360 days with another 5 epagomenal daysTemplate:Sfnp—celebrated as the birthdays of five major godsTemplate:Sfnp but feared for their ill luckTemplate:Sfnp—added "upon the year". The Egyptian months were originally simply numbered within each seasonTemplate:Sfnp but, in later sources, they acquired names from the year's major festivalsTemplate:Sfnp and the three decans of each one were distinguished as "first", "middle", and "last".Template:Sfnp It has been suggested that during the Nineteenth Dynasty and the Twentieth Dynasty the last two days of each decan were usually treated as a kind of weekend for the royal craftsmen, with royal artisans free from work.Template:Sfnp This scheme lacked any provision for leap year intercalation until the introduction of the Alexandrian calendar by Augustus in the 20sScript error: No such module "String".BC, causing it to slowly move through the Sothic cycle against the solar, Sothic, and Julian years.[4][2][34] Dates were typically given in a YMD format.[33]
The civil calendar was apparently preceded by an observational lunar calendar which was eventually made lunisolarTemplate:Efn and fixed to the civil calendar, probably in 357Script error: No such module "String".BC.Template:Sfnp The months of these calendars were known as "temple months"Template:Sfnp and used for liturgical purposes until the closing of Egypt's pagan temples under Theodosius I[35] in the ADScript error: No such module "String".390s and the subsequent suppression of individual worship by his successors.Template:Sfn
Smaller units of time were vague approximations for most of Egyptian history. Hours—known by a variant of the word for "stars"Template:Sfnp—were initially only demarcated at night and varied in length. They were measured using decan stars and by water clocks. Equal 24-part divisions of the day were only introduced in 127Script error: No such module "String".BC. Division of these hours into 60 equal minutes is attested in Ptolemy's 2nd-century works.
| Name | Days | ||
|---|---|---|---|
| English | Egyptian | ||
| hour | <hiero>E34:N35-W24:X1-N14:N5</hiero>Template:Efn | Script error: No such module "Lang". | variable |
| day | <hiero>S29-S29-S29-Z7-N5</hiero>Template:Efn | Script error: No such module "Lang". | 1 |
| decan decade week |
<hiero>S29-S29-S29-Z7-N5-V20</hiero>Template:Efn | "ten-day" Script error: No such module "Lang".Template:Sfnp |
10 |
| month | <hiero>N11:N14-D46:N5</hiero>Template:Efn | Script error: No such module "Lang". | 30 |
| season | <hiero>M17-X1:D21-G43-M6</hiero> | Script error: No such module "Lang".Template:Efn | 120 |
| year | <hiero>M4-X1:Z1</hiero>Template:Efn | Script error: No such module "Lang". | 365 <templatestyles src="Fraction/styles.css" />365+1⁄4 |
See also
- Egyptian hieroglyphics and Transliteration of Ancient Egyptian
- Ancient Egyptian mathematics and technology
- Egyptian calendar and astronomy
- Ancient Mesopotamian, Hebrew, Persian, Greek, Roman, and Byzantine units of measurement
- Modern Egyptian units of measurement & Metric system
Notes
References
Citations
<templatestyles src="Reflist/styles.css" />
- ↑ a b c d e f g h Corinna Rossi, Architecture and Mathematics in Ancient Egypt, Cambridge University Press, 2007
- ↑ a b c Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b c d e f g h i Template:Harvp.
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ a b c d Script error: No such module "citation/CS1".
- ↑ a b c d e f g h i j Template:Harvp.
- ↑ a b c Template:Harvp.
- ↑ a b Template:Harvp.
- ↑ a b c Script error: No such module "citation/CS1"..
- ↑ a b c d e f g Template:Harvp.
- ↑ a b c d e f g h i j k l m n o p q r s Template:Harvp.
- ↑ a b c d e f g h i j k Script error: No such module "citation/CS1"..
- ↑ a b c d e f Script error: No such module "citation/CS1"..
- ↑ a b c d e f g h i Cite error: Script error: No such module "Namespace detect".Script error: No such module "Namespace detect".
- ↑ a b Template:Harvp.
- ↑ Script error: No such module "citation/CS1"..
- ↑ a b c Template:Harvp.
- ↑ Template:Harvp.
- ↑ Script error: No such module "citation/CS1"..
- ↑ Script error: No such module "citation/CS1"..
- ↑ Script error: No such module "citation/CS1"..
- ↑ Digital Egypt: Measuring area in Ancient Egypt
- ↑ a b c d e f g h Template:Harvp.
- ↑ a b c d Template:Harvp.
- ↑ Script error: No such module "citation/CS1".. Template:In lang
- ↑ a b c Script error: No such module "citation/CS1"..
- ↑ Script error: No such module "citation/CS1"..
- ↑ a b Script error: No such module "citation/CS1"..
- ↑ Script error: No such module "citation/CS1"..
- ↑ Template:Harvp.
- ↑ a b Template:Harvp.
- ↑ Marshall Clagett, Ancient Egyptian Science: Calendars, clocks, and astronomy, 1989
- ↑ Theodosian Code 16.10.12
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Bibliography
- Script error: No such module "citation/CS1"..
- Script error: No such module "citation/CS1"..
- Script error: No such module "citation/CS1"..
- Script error: No such module "citation/CS1"..
- Script error: No such module "citation/CS1"., a review of Clagett's Ancient Egyptian Science, Vols. I & II.
- Script error: No such module "citation/CS1"..
- Script error: No such module "citation/CS1".. Template:In lang
- Script error: No such module "citation/CS1"..
- Script error: No such module "citation/CS1"..
- Script error: No such module "citation/CS1"..
- Script error: No such module "citation/CS1"..
- Script error: No such module "citation/CS1"..
External links
- Egyptian ceremonial ruler showing fingers, palms, hands, fists, feet, remen
- Cubit divided into fingers and hands
- Modern replica of Egyptian ruler
- Measuring length in Ancient Egypt Page by Digitalegypt (University College London).
- Irrational numbers and pyramids Template:Webarchive Article by Gay Robins and C. C. D. Shute
- Introduction to Egyptian Mathematics, with photographs of Maya's cubit rod from the Louvre and land surveying scenes from the tomb of Menna.
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