Throughout history many units of length named 'mile' have been used, with widely differing definitions, originating with the Roman mile of approximately 1479 m. The only three still commonly used today are the English (also called statute) mile of precisely 1609.344 m (used in the U.S. and the U.K.; defined to be 5280 international feet), the international nautical mile of exactly 1852 m, and the U.S. survey mile of approximately 1609.347 m (5280 U.S. survey feet). |
Throughout history many units of length named 'mile' have been used, with widely differing definitions, originating with the Roman mile of approximately 1479 m. The only three still commonly used today are the British (also called statute) mile of precisely 1609.344 m (used in the US and the UK; defined to be 5280 international feet), the international nautical mile of exactly 1852 m, and the U.S. survey mile of approximately 1609.347 m (5280 U.S. survey feet). The British mile was defined to be equal to 8 furlongs. |