Statute mile
Symbol: mi
The exact conversion of the mile to SI units depends on which definition of the yard is in use. Different English-speaking countries maintained independent physical standards for the yard that were found to differ by small, but measurable amounts and even to slowly shorten in length. The United States redefined the U.S. yard in 1893, but this resulted in U.S. and Imperial units with the same names having very slightly different values. The difference was resolved in 1959 with the definition of the international yard in terms of the meter by Australia, Canada, New Zealand, South Africa, the United Kingdom, and the United States. The "international mile" of 1,760 international yards is exactly 1,609.344 meters.
1609.344m = 1mi
1mi = 0.0006213712m