About the Units
chain (ch)
A traditional length unit used in land surveying and agriculture.
mile (U.S. survey) (mi (U.S. survey))
A slightly different mile unit used in land surveying.
Common Conversions
- 1 ch = 0.012500001 mi (U.S. survey)
- 79.99999 ch = 1 mi (U.S. survey)