A league is commonly treated as three statute miles.
Leagues to Chains Converter — lea to ch
Convert League (lea) to Chain (ch) using the exact conversion factor (1 league = 240 chain). See the formula, worked examples, and conversion table.
Leagues to Chains converter
Converter
Length Converter
Convert SI, imperial, US customary, astronomical, scientific, and historical length units.
Context values
Some unit families need one extra value for a physically accurate result.
A surveyor's chain is 66 feet.
Result = input x 4828.032 / 20.1168.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Leagues to Chains
League and Chain both measure length. Specifically: A league is commonly treated as three statute miles, and a surveyor's chain is 66 feet.
Formula
chains = leagues × 240
This factor comes from each unit's defined relationship to the category's base unit: 1 league equals 4828.032 base units, and 1 chain equals 20.1168 base units, so dividing one by the other gives the direct league-to-chain factor of 240.
Simple example
1 lea × 240 = 240 ch
1 league = 240 chains.
Real-world example
10 lea × 240 = 2,400 ch
10 leagues = 2,400 chains.
Conversion table
| League (lea) | Chain (ch) |
|---|---|
| 1 lea | 240 ch |
| 5 lea | 1,200 ch |
| 10 lea | 2,400 ch |
| 21.0975 lea | 5,063.4 ch |
| 42.195 lea | 10,126.8 ch |
| 100 lea | 24,000 ch |
Reverse conversion: Chain to League
240 ch × 0.004166666667 = 1 lea
240 chains = 1 league.
leagues = chains × 0.00416666666667
For a page dedicated to this direction, see Chain to League.
Understanding the League (lea)
A league is commonly treated as three statute miles.
Understanding the Chain (ch)
A surveyor's chain is 66 feet.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many chains are in 1 league?
1 league equals 240 chains, using the exact defined conversion factor rather than an estimate.
How do I convert league to chain?
Multiply the league value by 240. The converter above does this instantly to whatever precision you set.
How do I convert chain back to league?
Use the reverse factor: 1 chain equals 0.0041666667 leagues. You can also use the swap control in the converter above to flip the direction instantly.
What is a league?
League (lea) is a unit of length.
What is a chain?
Chain (ch) is a unit of length.
Is the league to chain conversion exact?
Yes. Both league and chain are defined by fixed standards rather than physical artifacts, so the factor of 240 used above is exact to as many digits as you choose to display.