# Definition:Mile

## Definition

There are a number of definitions for the mile.

### International Mile

 $\displaystyle$  $\displaystyle 1$ (international) mile $\displaystyle$ $=$ $\displaystyle 8$ furlongs $\displaystyle$ $=$ $\displaystyle 80$ chains $\displaystyle$ $=$ $\displaystyle 320$ rods, poles or perches $\displaystyle$ $=$ $\displaystyle 1760$ yards $\displaystyle$ $=$ $\displaystyle 1609 \cdotp 344$ metres (exactly)

### Nautical Mile

 $\displaystyle$  $\displaystyle 1$ nautical mile $\displaystyle$ $=$ $\displaystyle 1852$ metres (by definition) $\displaystyle$ $=$ $\displaystyle 10$ cables $\displaystyle$ $\approx$ $\displaystyle 6076$ feet $\displaystyle$ $\approx$ $\displaystyle 1 \cdotp 151$ (international) mile

 $\displaystyle$  $\displaystyle 1$ admiralty mile $\displaystyle$ $=$ $\displaystyle 6080$ feet (by definition) $\displaystyle$ $=$ $\displaystyle 1853 \cdotp 184$ metres $\displaystyle$ $\approx$ $\displaystyle 1 \cdotp 1515$ (international) mile