Convert Barleycorn to Foot
Convert barleycorns to feet instantly. 1 barleycorn = 0.0277777779 foot — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Foot to Barleycorn converter for the reverse conversion.
Units explained
Barleycorn
A barleycorn is an Imperial unit of length equal to one third of an inch (about 8.47 mm). It is the basis of UK shoe sizing and is one of the oldest English length units still in use.
The barleycorn derives from the average length of a grain of barley as a natural reference. Standardised at exactly 1/3 inch by the Statute of Edward II in 1324, which used three barleycorns to define an inch.
Barleycorns are the foundation of UK and US children's shoe sizing — each whole size differs by one barleycorn. Also occasionally referenced in horse-handling and historical English literature.
Standardised in 1324 by the Statute of Edward II at 1/3 inch; the value became exact in 1959 when the inch was fixed at 25.4 mm.
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.
Barleycorn to Foot conversion formula
The relationship between barleycorns and feet:
To convert barleycorns to feet, multiply the value in barleycorns by 0.0277777779. To reverse, multiply feet by 35.9999998583.
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 Barleycorn converter for the reverse direction.
Step-by-step: convert barleycorns to feet
- Write down the value in barleycorns (barleycorn).
- Multiply that value by the factor 0.0277777779.
- The product is the equivalent value in feet (ft).
- To reverse, multiply the foot value by 35.9999998583.
Worked examples
Example 1 — Convert 1 barleycorn to ft:
1 × 0.0277777779 = 0.0277777779 ft
Example 2 — Convert 100 barleycorn to ft:
100 × 0.0277777779 = 2.7777777887 ft
Real-world example — Furniture and large objects
A 72-barleycorn piece of furniture converts to a value in feet that's easier to mentally compare with room dimensions. This is the typical workflow when shopping internationally and product specs use a different unit than your room measurements.
72 barleycorn × 0.0277777779 = 2.0000000079 ft
Real-world example — Children's height milestones
A 150-barleycorn-tall child measures a value in feet that's commonly used for theme-park ride height requirements when travelling between countries that use different measurement units.
150 barleycorn × 0.0277777779 = 4.1666666831 ft
Real-world example — Body height conversion
You enter your height as 180 barleycorns into an international job or visa application. The form then asks for the same value in feet — converting between these adjacent units is one of the most-used length conversions globally.
180 barleycorn × 0.0277777779 = 5.0000000197 ft
Barleycorn to Foot conversion table
Standard reference values for converting barleycorns to feet:
| Barleycorn [barleycorn] | Foot [ft] |
|---|---|
| 0.01 | 0.0002777778 |
| 0.1 | 0.0027777778 |
| 1 | 0.0277777779 |
| 2 | 0.0555555558 |
| 3 | 0.0833333337 |
| 4 | 0.1111111115 |
| 5 | 0.1388888894 |
| 10 | 0.2777777789 |
| 20 | 0.5555555577 |
| 30 | 0.8333333366 |
| 40 | 1.1111111155 |
| 50 | 1.3888888944 |
| 100 | 2.7777777887 |
| 500 | 13.8888889436 |
| 1000 | 27.7777778871 |
Frequently asked questions
How many feet is 1 barleycorn?
How do I convert barleycorns to feet?
How do I convert feet back to barleycorns?
How many feet is 100 barleycorns?
Popular length unit conversions
Convert Barleycorn to other length units
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Metric / SI (4 units)
Imperial / US Customary (26 units)
Sources & references
Conversion factor (1 barleycorn = 0.0277777779 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 Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.