How many inches are in a foot?

1 ft = 12 in. To convert any amount, multiply by 12.

How do you convert feet to inches?

Multiply the number of feet by 12 to get inches. The formula is shown in the "How it's calculated" section above.

Where does the conversion factor come from?

It's a published international standard. Most are defined exactly by international agreement (e.g. 1 inch = 25.4 mm exactly, 1 lb = 0.45359237 kg exactly). Source citations are listed under the formula above.

Unit converter — Length

Feet to inches converter

Convert feet (ft) to inches (in). Source-cited conversion factor, exact to the displayed precision.

Results are mathematically exact for the displayed precision. How we calculate.

How it's calculated

Convert feet to inches— the formula

Feet convert to inches by multiplying by the published conversion factor. The factor below is exact to the precision shown, sourced from the citation under the formula.

in = ft × 12

ft = in × 0.083333

SI base unit (BIPM). US customary lengths from the 1959 international yard agreement: 1 yd = 0.9144 m exactly, 1 in = 25.4 mm exactly, 1 mi = 1609.344 m exactly.

Questions

Frequently asked questions

How many inches are in a foot?
1 ft = 12 in. To convert any amount, multiply by 12.
How do you convert feet to inches?
Multiply the number of feet by 12 to get inches. The formula is shown in the "How it's calculated" section above.
Where does the conversion factor come from?
It's a published international standard. Most are defined exactly by international agreement (e.g. 1 inch = 25.4 mm exactly, 1 lb = 0.45359237 kg exactly). Source citations are listed under the formula above.