These units allow you to express distance, length, width, depth, height or altitude.
Note that 1 kilometre (kilometer) is roughly equivalent to 0.62 miles.
A square metre (meter) is roughly equivalent to 11 square feet (10.76 to be more precise).
Speed can be expressed in « miles per hour (mph) »
1 mile = 1,609344 kilometers.
It may be useful to know that 1 kilogram is roughly equivalent to 2.2 pounds.