Cubit (Royal/Egyptian) to Arpent Conversion Calculator: Free Online Tool
Convert cubits to arpents with our free online length converter.
Cubit (Royal/Egyptian) to Arpent Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Cubit (Royal/Egyptian)).
- The converted value in Arpent will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Length category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Cubit (Royal/Egyptian) to Arpent
Converting Cubit (Royal/Egyptian) to Arpent involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Cubit (Royal/Egyptian) = 0.00894461 arpentsExample Calculation:
Convert 10 cubits: 10 × 0.00894461 = 0.0894461 arpents
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
What is a Cubit (Royal/Egyptian) and a Arpent?
The Royal Cubit (Ancient Egyptian: meh nesut) was the primary ancient Egyptian standard unit of linear measure. It was based on the length of the forearm from the elbow to the tip of the extended middle finger, plus the width of the palm. It is considered one of the earliest attested standard units of measurement.
The Royal Cubit was typically divided into 7 palms (shesep), with each palm further divided into 4 digits or fingers (djeba), totaling 28 digits. Its length varied slightly over time and location but is generally accepted to be approximately 52.3 to 52.9 centimeters (about 20.6 to 20.8 inches). A common average value used is 0.524 meters.
A shorter Common Cubit or Short Cubit (Ancient Egyptian: meh sherer) also existed, measuring 6 palms (24 digits), approximately 45 cm.
The Arpent is a historical French unit used primarily for measuring land area, but also sometimes used as a unit of length. As a unit of length, the arpent typically referred to the side length of a square arpent of land.
Its precise length varied significantly by region and time period in France and its colonies. A commonly cited value, particularly associated with the arpent de Paris, is based on 180 French feet (pieds du Roi), which equates to approximately:
- 58.47 meters (m)
- 191.8 feet (ft)
Other variations existed, such as the arpent commun (based on 200 French feet, ~64.97 m) and the arpent d'ordonnance (based on 220 French feet, ~71.47 m).
Note: The Cubit (Royal/Egyptian) is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Arpent belongs to the imperial/US customary system.
History of the Cubit (Royal/Egyptian) and Arpent
The Royal Cubit emerged very early in Egyptian history, likely during the Predynastic or Early Dynastic Period (before 3000 BCE). Its standardization was crucial for the large-scale construction projects undertaken by the pharaohs.
- Early Standardization: It represents one of history's first successful attempts at creating and maintaining a standard unit of length, essential for architectural precision and administrative consistency.
- Cubit Rods: Physical standards, known as cubit rods, were created from durable materials like wood, slate, or granite. These rods were often inscribed with subdivisions (palms, digits, and sometimes fractions of digits) and sometimes bore dedications or official insignia. Examples have been found in tombs, such as that of Tutankhamun, and likely served as official benchmarks.
- Monumental Construction: The Royal Cubit was the fundamental unit used in the design and construction of temples, palaces, and most famously, the pyramids. The precise dimensions of structures like the Great Pyramid of Giza reflect careful measurement using this standard.
- Longevity: The Royal Cubit remained the standard measure in Egypt for millennia, from the Old Kingdom through the Ptolemaic period and into Roman times, demonstrating remarkable stability.
The term "arpent" likely derives from the Gaulish arepennis, meaning "end of a field," suggesting its origins relate to agricultural land measurement, possibly representing the amount of land that could be plowed in a day. It became a fundamental unit for land surveying in France during the medieval period and remained in use until the adoption of the metric system following the French Revolution.
- Regional Variations: Before standardization efforts, the length (and thus area) of the arpent varied considerably across different regions of France. Key variations included:
- Arpent de Paris: Based on a perche (rod) of 18 pieds du Roi (French feet), with the linear arpent (side of the square) being 10 perches, totaling 180 pieds (~58.47 m). The area was 32,400 square pieds.
- Arpent Commun: Based on a perche of 20 pieds, linear arpent of 200 pieds (~64.97 m). Area: 40,000 square pieds.
- Arpent d'Ordonnance (or Arpent des Eaux et Forêts): Based on a perche of 22 pieds, linear arpent of 220 pieds (~71.47 m). Area: 48,400 square pieds. Used primarily for royal forests.
- Colonial Usage: The arpent was exported to French colonies, notably:
- New France (Quebec, Canada): The arpent de Paris became the standard for land grants along the St. Lawrence River, shaping the characteristic long, narrow farm plots (rangs).
- Louisiana (USA): The French arpent (usually the arpent de Paris) was used for land measurement before and sometimes after the Louisiana Purchase. Its legacy persists in land titles and some place names.
- Metrication: The metric system officially replaced the arpent and other traditional units in France in the late 18th and early 19th centuries, though its use lingered in practice and historical records.
Common Uses for cubits and arpents
Explore the typical applications for both Cubit (Royal/Egyptian) (imperial/US) and Arpent (imperial/US) to understand their common contexts.
Common Uses for cubits
The Royal Cubit was integral to many aspects of ancient Egyptian society:
- Architecture and Construction: Defining building dimensions, column heights, room layouts, and overall structural proportions.
- Land Surveying: Measuring fields for agriculture, taxation, and property boundaries, especially after the annual Nile flood receded.
- Record Keeping: Used in administrative documents, inventories, and calculations.
- Craftsmanship: Measuring materials like stone blocks, timber, rope, and textiles.
- Art and Iconography: Used to establish proportions in statues and reliefs according to canonical rules.
- Religious and Funerary Contexts: Cubit rods were sometimes included in tomb equipment, possibly symbolizing order and correctness or serving a practical purpose in the afterlife.
- Historical Texts: The term "cubit" appears in various ancient texts, including the Bible, though the specific length intended (Egyptian Royal, common, Babylonian, etc.) can be context-dependent.
Common Uses for arpents
The Arpent (both linear and area) is now largely obsolete for practical measurement but remains historically significant:
- Historical Land Surveys: Essential for interpreting old maps, deeds, and land grants in France, Quebec, Louisiana, and other areas formerly under French control (e.g., parts of the US Midwest like Missouri, Illinois, Indiana).
- Legal Context: Land descriptions in some regions may still reference original measurements in arpents, requiring conversion for modern understanding.
- Historical Research: Understanding the arpent is crucial for historians studying agriculture, settlement patterns, and land tenure systems in French history and its colonial contexts.
- Unit of Area: While this page focuses on the length, the arpent is more commonly known and encountered as a unit of area (the square arpent).
Frequently Asked Questions
Questions About Cubit (Royal/Egyptian) (cubit)
How was the Royal Cubit standardized?
Standardization was achieved through the creation and maintenance of master cubit rods. These physical exemplars, often made of durable stone like granite, were likely kept in major temples or administrative centers. Officials and craftsmen would use copies made from these masters for practical work. The rods themselves were meticulously marked with the primary divisions of 7 palms and 28 digits, often including finer subdivisions. This system ensured consistency across large projects and different regions of the kingdom.
What is the difference between a short cubit and a royal cubit?
The two main cubit measures in ancient Egypt were:
- Short Cubit (meh sherer): Measured 6 palms (24 digits), approximately 44.7 to 45 cm (around 17.6 inches). It represented the distance from the elbow to the tip of the thumb or closed fist. It was likely used for more common, everyday measurements of cloth, goods, or smaller objects.
- Royal Cubit (meh nesut): Measured 7 palms (28 digits), approximately 52.3 to 52.9 cm (around 20.6 inches). It was the length from the elbow to the tip of the middle finger plus one palm width. This was the official standard used for monumental architecture, land surveying, and significant state projects. It likely held a higher status and was associated with the pharaoh and divine order.
How long was the Royal Cubit?
The Royal Cubit was approximately:
- 0.523 to 0.529 meters (m)
- 52.3 to 52.9 centimeters (cm)
- 20.6 to 20.8 inches (in)
- Roughly 1.72 feet (ft)
A value of 0.524 m is often used as a representative average.
Is the Cubit still used today?
No, the ancient Egyptian Cubit (both Royal and short) is obsolete. It has not been in practical use for centuries, having been replaced by other measurement systems and ultimately by the metric system. Its relevance today is purely historical, archaeological, and academic.
Is the Cubit an SI unit?
No, the Cubit is not an SI unit. It is an ancient, traditional unit of measurement originating in Egypt. The SI base unit for length is the meter (m).
About Arpent (arpent)
Is the Arpent a unit of length or area?
The Arpent is primarily known as a unit of area, representing a specific parcel of land. However, a linear arpent also exists, defined as the side length of a square whose area is one arpent. This page focuses on the linear arpent. The relationship is direct: Area Arpent = (Linear Arpent)². Because the linear arpent varied, the area also varied.
Where is the Arpent still relevant?
The Arpent is not used for everyday measurements today. Its relevance is almost entirely historical and legal:
- Quebec (Canada): Crucial for understanding historical land division and property lines, especially the seigneurial system.
- Louisiana (USA): Important for interpreting land titles dating back to the French colonial period.
- France: Relevant for historical studies and understanding old documents.
- Other former French territories: May appear in historical records (e.g., Mauritius, parts of the US Midwest).
How long is a linear Arpent?
There is no single value, as it varied regionally. Common historical values include:
- Arpent de Paris: ~180 French feet ≈ 58.47 meters ≈ 191.8 feet (Most common in Quebec & Louisiana)
- Arpent Commun: ~200 French feet ≈ 64.97 meters ≈ 213.2 feet
- Arpent d'Ordonnance: ~220 French feet ≈ 71.47 meters ≈ 234.5 feet (Note: The French foot, pied du Roi, was slightly longer than the English foot, approx. 32.48 cm or 12.79 inches).
How does the linear Arpent compare to a Meter or Foot?
- The most common linear arpent (~58.47 m) is significantly longer than a meter. (1 Arpent ≈ 58.47 m)
- It is also much longer than a foot. (1 Arpent ≈ 191.8 ft)
Is the Arpent an SI unit?
No, the Arpent is not an SI unit. It is a traditional unit from the French system of measurements. The SI base unit for length is the meter (m), and the SI unit for area is the square meter (m²).
Conversion Table: Cubit (Royal/Egyptian) to Arpent
| Cubit (Royal/Egyptian) (cubit) | Arpent (arpent) |
|---|---|
| 1 | 0.009 |
| 5 | 0.045 |
| 10 | 0.089 |
| 25 | 0.224 |
| 50 | 0.447 |
| 100 | 0.895 |
| 500 | 4.472 |
| 1,000 | 8.945 |
All Length Conversions
Other Units from Length
- Meter (m)
- Kilometer (km)
- Hectometer (hm)
- Decimeter (dm)
- Centimeter (cm)
- Millimeter (mm)
- Inch (in)
- Foot (ft)
- Yard (yd)
- Mile (mi)
- Nautical Mile (NM)
- Micrometer (μm)
- Nanometer (nm)
- Light Year (ly)
- Astronomical Unit (AU)
- Parsec (pc)
- Angstrom (Å)
- Point (Typography) (pt)
- Mil/Thou (mil)
- Fathom (fath)
- Furlong (fur)
- Link (Gunter's) (li)
- Pace (pace)
- Span (span)
- Digit (digit)
- Cable Length (cb)
- Ell (ell)
- Finger (finger)
- Roman Mile (m.p.)
- Stadion (stadion)
- Chi (Chinese) (chi)
- Shaku (Japanese) (shaku)
- Li (Chinese) (li)
- Toise (toise)
- Bolt (bolt)
- Rope (rope)
- Smoot (smoot)
- Sajene (sajene)
- Ken (ken)
- Wa (wa)
- Vara (vara)
- Aln (aln)
- Versta (versta)
- Ri (Japanese) (ri)
- Klafter (klafter)
- Yojana (yojana)
- Skein (skein)