Feet to Miles Converter

About the ft to mi calculation

One foot is exactly 0.00018939 miles, so converting between them is a single multiplication. Enter any value above and the result updates as you type. Used for human height in the US and UK, and for altitude in aviation globally. Road distances in the US and UK. Defined as exactly 1,609.344 metres since 1959.

Formula

mi = ft × 0.00018939

1 ft = 0.00018939 mi
1 mi = 5,280 ft

Worked example

To convert 6 ft, multiply by 0.00018939: 6 × 0.00018939 = 0.00113636 mi.

Frequently asked questions

How many miles are in a foot?

There are 0.00018939 miles in one foot. To convert any amount, multiply the number of feet by 0.00018939.

How do I convert miles back to feet?

Divide instead of multiplying, or equivalently multiply by 5,280. One mile is 5,280 feet.

Is this conversion exact?

Yes. Since the international agreement of 1959, the relationship between feet and miles is defined exactly rather than measured, so the only rounding here is in how many decimal places we show.

Where is each of these units used?

Feet: used for human height in the US and UK, and for altitude in aviation globally. Miles: road distances in the US and UK. Defined as exactly 1,609.344 metres since 1959.

Sources

• NIST Special Publication 811 — Guide for the Use of the International System of Units