Convert League to US Survey Foot
Convert leagues to us survey feet instantly. 1 league = 15839.96832 us survey foot — use the live calculator, the exact formula, a conversion table and worked examples. Also check the US Survey Foot to League converter for the reverse conversion.
Units explained
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
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 to US Survey Foot 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 leagues and us survey feet:
To convert leagues to us survey feet, multiply the value in leagues by 15839.96832. To reverse, multiply us survey feet by 6.313144e-5.
How to use this converter
Type a value into the calculator. The result in us survey 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 US Survey Foot to League converter for the reverse direction.
Step-by-step: convert leagues to us survey feet
- Write down the value in leagues (lea).
- Multiply that value by the factor 15839.96832.
- The product is the equivalent value in us survey feet (sft).
- To reverse, multiply the us survey foot value by 6.313144e-5.
Worked examples
Example 1 — Convert 1 lea to sft:
1 × 15839.96832 = 15839.96832 sft
Example 2 — Convert 100 lea to sft:
100 × 15839.96832 = 1583996.8319999997 sft
Real-world example — Geographic to human-scale conversion
One league converts to a precise number of us survey feet — the everyday arithmetic for navigation systems, race-distance calculations, and any context where bigger geographic units must be related to the smaller working units.
1 lea × 15839.96832 = 15839.96832 sft
Real-world example — Lap pacing and route segmentation
Translating a league-scale distance into us survey feet is how runners, cyclists, and route planners convert top-line totals into the working segments they actually pace and execute.
1 lea × 15839.96832 = 15839.96832 sft
Real-world example — Track athletics distances
A 1-league running track equals one thousand us survey feet. Track athletes' lap pacing converts the lap (often 400 of the smaller unit) into the fractional race distance whenever a coach reviews splits.
1 lea × 15839.96832 = 15839.96832 sft
League to US Survey Foot conversion table
Standard reference values for converting leagues to us survey feet:
| League [lea] | US Survey Foot [sft] |
|---|---|
| 0.01 | 158.3996832 |
| 0.1 | 1583.996832 |
| 1 | 15839.96832 |
| 2 | 31679.93664 |
| 3 | 47519.90496 |
| 4 | 63359.87328 |
| 5 | 79199.8416 |
| 10 | 158399.6832 |
| 20 | 316799.3663999999 |
| 30 | 475199.0496 |
| 40 | 633598.7327999999 |
| 50 | 791998.4159999999 |
| 100 | 1583996.8319999997 |
| 500 | 7919984.1599999992 |
| 1000 | 1.583997e+7 |
Frequently asked questions
How many us survey feet is 1 league?
How do I convert leagues to us survey feet?
How do I convert us survey feet back to leagues?
How many us survey feet is 100 leagues?
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Sources & references
Conversion factor (1 lea = 15839.96832 sft) 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.