01
Identify Cubits
Start with a measurement from Islamic-era texts (e.g., 50 Hashimi cubits for a mosque courtyard).
Arabic (Hashimi) Cubit to Feet Converter
Enter an Arabic Hashimi cubit value below to see it visually scaled into modern imperial feet.
Converter Tool
2.13333
Feet
1 Hashimi Cubits × 2.13333 = 2.13333 Feet
Visual Diagram
1 Input
1 Hashimi Cubits
2 Formula
1 × 2.13333 = 2.13333
3 Result
2.13333 Feet
Length Comparison
Hashimi Cubits
1
Feet
2.13333
Understanding the Arabic Hashimi Cubit
The longest documented cubit — the imperial standard of the Islamic Golden Age.
What Is the Hashimi Cubit?
The Arabic Hashimi cubit (dhirā' al-Hāshimī) measures approximately 25.6 inches (65.02 cm). Named after the Banu Hashim clan, it became the official architectural and commercial standard across the early Islamic caliphates, from Damascus to Baghdad to Córdoba.
The World's Longest Cubit
At 25.6 inches, the Hashimi cubit surpasses every other documented cubit standard in history — including the Sacred Egyptian (25.26 in), the Royal Egyptian (20.6 in), and the Babylonian (19.8 in). This makes it a unique benchmark in comparative metrology.
The Conversion Ratio
The Hashimi cubit to feet ratio is 1 : 2.1333. Islamic-era metrologists documented this cubit as equal to two French feet, a cross-reference that gives modern historians a highly precise conversion factor.
The Measure of the Caliphate
From the mosques of Baghdad to the irrigation canals of Al-Andalus.
Engineering an Empire of Knowledge
During the Islamic Golden Age (8th–14th century CE), the Hashimi cubit was the standard by which the great mosques, libraries, and caravanserais of the caliphate were built. The House of Wisdom in Baghdad, the Great Mosque of Córdoba, and the elaborate qanat irrigation systems of Persia were all laid out using this exact standard.
Medieval Islamic scholars were meticulous record-keepers. They documented the Hashimi cubit's equivalence to two French feet in mathematical treatises, allowing it to be cross-referenced with European standards centuries later. This makes the Hashimi cubit one of the most precisely reconstructable ancient measurements in existence.
Step-by-Step: Converting Hashimi Cubits into Feet
02
Multiply by 2.1333
Apply the formula: 50 × 2.1333 = 106.67.
03
Final Feet
The result is approximately 106.7 feet — the courtyard's full width in modern terms.
Real-World Example
Let's convert a qanat irrigation tunnel length:
300 Hashimi Cubits × 2.1333 = 640 Feet
Persian qanat tunnels, engineered to carry mountain meltwater to arid cities, could stretch for miles. A 300-cubit section translates to roughly 640 feet of underground engineering — all laid out using the Hashimi standard.
The Arabic Hashimi Cubit Formula
Multiplication Method
Feet = Hashimi Cubit × 2.1333
Multiply by 2.1333 (derived from 25.6 inches ÷ 12).
Reverse Division Method
Hashimi Cubit = Feet ÷ 2.1333
To convert feet back to Hashimi cubits, divide by 2.1333.
Practical Applications
Where the Arabic Hashimi cubit conversion is used today.
🕌
Islamic Architecture Studies
Architectural historians convert Hashimi cubit dimensions to study the proportions of early mosques, madrasas, and caravanserais across the former caliphate.
💧
Qanat Engineering Analysis
Hydrologists studying ancient Persian qanat systems convert cubit-based tunnel dimensions to understand the extraordinary precision of underground water engineering.
📚
Manuscript Translation
Translators of medieval Arabic mathematical and scientific treatises use the 2.1333 factor to interpret physical descriptions and experimental apparatus dimensions.
🗺️
Trade Route Mapping
Historians mapping the Silk Road and Indian Ocean trade networks use the Hashimi cubit to convert distance and cargo measurements found in medieval merchant records.
Arabic Hashimi Cubit to Feet — Quick Reference
Common Islamic-era values pre-converted into feet for instant lookup.
1 Hashimi Cubit=2.133 Feet
5 Hashimi Cubits=10.667 Feet
10 Hashimi Cubits=21.333 Feet
20 Hashimi Cubits=42.667 Feet
50 Hashimi Cubits=106.67 Feet
100 Hashimi Cubits=213.33 Feet
500 Hashimi Cubits=1,066.7 Feet
1000 Hashimi Cubits=2,133.3 Feet
Frequently Asked Questions
Everything you need to know about the Arabic Hashimi cubit.
One Arabic Hashimi cubit equals approximately 2.1333 feet (25.6 inches or 65.02 cm). This makes it the longest reliably documented cubit in world history.
The name derives from the Banu Hashim, the clan of the Prophet Muhammad. The Hashimi cubit became the official measurement standard during the early Islamic caliphates, used extensively in the construction of mosques, caravanserais, and irrigation systems across the expanding Muslim world.
Islamic-era metrologists documented the Hashimi cubit as equal to two French feet (roughly 25.6 inches). This precise cross-reference, recorded in multiple medieval Arabic and European scholarly works, allows modern historians to reconstruct the measurement with high confidence.
Multiply the number of Hashimi cubits by 2.1333. For example, 10 Hashimi cubits equals approximately 21.33 feet.
Yes. At 25.6 inches, the Arabic Hashimi cubit is the longest reliably documented cubit standard in the ancient and medieval world, surpassing even the Sacred Egyptian cubit (25.26 inches) and the Royal Egyptian cubit (20.6 inches).