Convert US Survey Foot to League
Convert us survey feet to leagues instantly. 1 us survey foot = 6.313144e-5 league — use the live calculator, the exact formula, a conversion table and worked examples. Also check the League to US Survey Foot converter for the reverse conversion.
Units explained
US Survey Foot
The US Survey Foot is a legacy unit of length defined as exactly 1200/3937 meters (approximately 0.3048006 m). It differs from the modern international foot by about 2 parts per million.
Established in the United States by the Mendenhall Order of 1893, which defined the foot in terms of the meter as 1200/3937 m. The US continued using this value for surveying even after the 1959 International Yard and Pound Agreement standardized the international foot at exactly 0.3048 m.
Used in US land surveying, geodetic measurements, state plane coordinate systems, and legal land descriptions. The US Survey Foot was officially deprecated by NIST and NOAA effective December 31, 2022, with the international foot becoming the sole US standard. Legacy data and recorded land surveys still reference it.
Mendenhall Order of 1893 defined the foot as 1200/3937 m; persisted in US surveying after 1959; officially deprecated by NIST/NOAA as of December 31, 2022.
League
A league is an Imperial unit of length equal to 3 miles (about 4.83 km). It is one of the oldest distance units in English usage, historically representing the distance a person could walk in one hour.
The English league derives from the ancient Roman leuga via medieval English customary practice. Standardised at 3 statute miles in English law.
Leagues appear in historical English literature ('seven-league boots'), maritime navigation (a nautical league is 3 nautical miles), and traditional distance descriptions. Modern usage is largely literary.
Medieval English customary origin; standardised at 3 miles; became exact via the 1959 International Yard and Pound Agreement.
US Survey Foot to League conversion formula
Note: this conversion uses a generally accepted modern value. Historical and regional definitions of this unit varied across times and places.
The relationship between us survey feet and leagues:
To convert us survey feet to leagues, multiply the value in us survey feet by 6.313144e-5. To reverse, multiply leagues by 15839.96832.
How to use this converter
Type a value into the calculator. The result in leagues updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the League to US Survey Foot converter for the reverse direction.
Step-by-step: convert us survey feet to leagues
- Write down the value in us survey feet (sft).
- Multiply that value by the factor 6.313144e-5.
- The product is the equivalent value in leagues (lea).
- To reverse, multiply the league value by 15839.96832.
Worked examples
Example 1 — Convert 1 sft to lea:
1 × 6.313144e-5 = 6.313144e-5 lea
Example 2 — Convert 100 sft to lea:
100 × 6.313144e-5 = 0.0063131439 lea
Real-world example — Imperial yard-to-mile scale
1,760 us survey feet equals exactly one league. American athletes and surveyors use this conversion to translate distances quoted in the smaller imperial unit into recognizable fractions of the larger geographic one.
1760 sft × 6.313144e-5 = 0.1111113333 lea
Real-world example — Metric distance scale-up
One thousand us survey feet equals one league — the running distance for a 1K race or the standard metric kilometre-scale step. The simple thousand-fold conversion is the most-used metric distance translation.
1000 sft × 6.313144e-5 = 0.0631314394 lea
Real-world example — Imperial mile arithmetic
5,280 us survey feet equals exactly one league. American hikers tracking elevation gain in the smaller unit but trail length in the larger one use this constant every time they read a topographic map.
5280 sft × 6.313144e-5 = 0.333334 lea
US Survey Foot to League conversion table
Standard reference values for converting us survey feet to leagues:
| US Survey Foot [sft] | League [lea] |
|---|---|
| 0.01 | 6.313144e-7 |
| 0.1 | 6.313144e-6 |
| 1 | 6.313144e-5 |
| 2 | 0.0001262629 |
| 3 | 0.0001893943 |
| 4 | 0.0002525258 |
| 5 | 0.0003156572 |
| 10 | 0.0006313144 |
| 20 | 0.0012626288 |
| 30 | 0.0018939432 |
| 40 | 0.0025252576 |
| 50 | 0.003156572 |
| 100 | 0.0063131439 |
| 500 | 0.0315657197 |
| 1000 | 0.0631314394 |
Frequently asked questions
How many leagues is 1 us survey foot?
How do I convert us survey feet to leagues?
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How many leagues is 100 us survey feet?
Popular length unit conversions
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Metric / SI (7 units)
Imperial / US Customary (26 units)
Nautical (1 units)
Sources & references
Conversion factor (1 sft = 6.313144e-5 lea) 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.