Convert Cubit to Foot
Convert cubits to feet instantly. 1 cubit = 1.5 foot — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Foot to Cubit converter for the reverse conversion.
Units explained
Cubit
The UK cubit is an Imperial unit of length equal to 18 inches (457.2 mm). It represents the historical distance from the elbow to the tip of the middle finger.
Cubits derive from ancient body-measure traditions found in Mesopotamia, Egypt, and the eastern Mediterranean. The English customary cubit was standardised at 18 inches in medieval times.
UK cubits are rare in modern commerce but appear in historical English texts, biblical references, and historical reconstructions. Different cultures used cubits of different lengths.
Ancient origin; standardised at 18 inches in English customary practice; became exact via the 1959 International Yard and Pound Agreement.
Foot
A foot is an Imperial and US customary unit of length equal to 12 inches or exactly 0.3048 meters. It is the most commonly used unit of length in everyday measurement in the United States.
The foot's origin is literally the length of a human foot, used as a measurement standard since antiquity. The English foot was standardized at various points in history; the modern international foot (0.3048 m exactly) was fixed by the 1959 International Yard and Pound Agreement.
Feet are used in the US for body height, building dimensions, room sizes, road sign clearances, aviation altitude (feet above sea level), and most everyday distance estimation. The UK uses feet informally for height despite officially being metric.
Used since antiquity; standardized to 0.3048 m exactly by the International Yard and Pound Agreement of 1959. Aviation worldwide uses feet for altitude despite metric adoption elsewhere.
Cubit to Foot conversion formula
The relationship between cubits and feet:
To convert cubits to feet, multiply the value in cubits by 1.5. To reverse, multiply feet by 0.6666666667.
How to use this converter
Type a value into the calculator. The result in feet updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Foot to Cubit converter for the reverse direction.
Step-by-step: convert cubits to feet
- Write down the value in cubits (cubit).
- Multiply that value by the factor 1.5.
- The product is the equivalent value in feet (ft).
- To reverse, multiply the foot value by 0.6666666667.
Worked examples
Example 1 — Convert 1 cubit to ft:
1 × 1.5 = 1.5 ft
Example 2 — Convert 100 cubit to ft:
100 × 1.5 = 150 ft
Real-world example — Reference scenario in case of fallback
Conversion between human-scale length units is the everyday workflow of architecture, athletics, and apparel design — three of the most common contexts that span metric and imperial systems.
1 cubit × 1.5 = 1.5 ft
Real-world example — Adult height conversion
A 1.8-cubit-tall person measures a value in feet that converts the height to the unit favoured by American forms, schools, or driver's licences. This is daily routine for anyone living between metric and imperial systems.
1.8 cubit × 1.5 = 2.7 ft
Real-world example — Fabric purchase length
Two cubits of fabric equals a value in feet essential for tailors and textile buyers sourcing material from international suppliers that quote in different units.
2 cubit × 1.5 = 3 ft
Cubit to Foot conversion table
Standard reference values for converting cubits to feet:
| Cubit [cubit] | Foot [ft] |
|---|---|
| 0.01 | 0.015 |
| 0.1 | 0.15 |
| 1 | 1.5 |
| 2 | 3 |
| 3 | 4.5 |
| 4 | 6 |
| 5 | 7.5 |
| 10 | 15 |
| 20 | 30 |
| 30 | 45 |
| 40 | 60 |
| 50 | 75 |
| 100 | 150 |
| 500 | 750 |
| 1000 | 1500 |
Frequently asked questions
How many feet is 1 cubit?
How do I convert cubits to feet?
How do I convert feet back to cubits?
How many feet is 100 cubits?
Popular length unit conversions
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Metric / SI (4 units)
Imperial / US Customary (26 units)
Sources & references
Conversion factor (1 cubit = 1.5 ft) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.