Feet to Inches Converter

About the ft to in calculation

One foot is exactly 12 inches, 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. Still standard for screen sizes, pipe diameters and tyre rims worldwide.

Formula

in = ft × 12

1 ft = 12 in
1 in = 0.083333 ft

Worked example

To convert 6 ft, multiply by 12: 6 × 12 = 72 in.

Frequently asked questions

How many inches are in a foot?

There are 12 inches in one foot. To convert any amount, multiply the number of feet by 12.

How do I convert inches back to feet?

Divide instead of multiplying, or equivalently multiply by 0.083333. One inch is 0.083333 feet.

Is this conversion exact?

Yes. Since the international agreement of 1959, the relationship between feet and inches 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. Inches: still standard for screen sizes, pipe diameters and tyre rims worldwide.

Sources

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