A mile is a unit of linear measure equal to 1,760 yards, while a foot is a unit of length in the Imperial units and U.S. customary units.
Miles are abbreviated as mi while a foot is abbreviated as ft.
Formula to convert miles to feet.
To convert mi to ft, we use the conversion ratio that we get from how they relate.
We are told that 1 mile is equivalent to 5280 feet.
Therefore, to convert mi to ft we multiply the miles by 5280.
Length in ft = Length in mi x 5280
Convert 400 miles to feet.
= 400 x 5280
= 2,112,000 feet.