Centimeters to Miles Converter

About the cm to mi calculation

One centimeter is exactly 0.00000621 miles, so converting between them is a single multiplication. Enter any value above and the result updates as you type. How height and clothing sizes are quoted almost everywhere outside the US. Road distances in the US and UK. Defined as exactly 1,609.344 metres since 1959.

Formula

mi = cm × 0.00000621

1 cm = 0.00000621 mi
1 mi = 160,934.4 cm

Worked example

To convert 180 cm, multiply by 0.00000621: 180 × 0.00000621 = 0.00111847 mi.

Frequently asked questions

How many miles are in a centimeter?

There are 0.00000621 miles in one centimeter. To convert any amount, multiply the number of centimeters by 0.00000621.

How do I convert miles back to centimeters?

Divide instead of multiplying, or equivalently multiply by 160,934.4. One mile is 160,934.4 centimeters.

Is this conversion exact?

Yes. Since the international agreement of 1959, the relationship between centimeters 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?

Centimeters: how height and clothing sizes are quoted almost everywhere outside the US. 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