How many inches are in 1 foot?

One foot contains exactly 12 inches. This relationship has been standard in English measurement systems for centuries.

How do I convert feet to inches?

Multiply the number of feet by 12. For mixed measurements, multiply the feet by 12 and add the remaining inches. Example: 5 feet 9 inches = (5 × 12) + 9 = 69 inches.

Why are there 12 inches in a foot?

The base-12 (duodecimal) system was favored historically because 12 is divisible by 2, 3, 4, and 6, making fractions easier to work with. This is the same reason a clock has 12 hours and a year has 12 months.

Feet to Inches (ft to in) Converter

1 ft = 12 in

1 Foot equals 12 Inches (1 ft = 12 in). Convert Feet to Inches with formula, table, and examples.

One foot equals exactly 12 inches. This is one of the most basic imperial measurement relationships, used constantly in American daily life for expressing height, room dimensions, and small-to-medium distances. Most Americans learn this conversion in elementary school.

How to Convert Feet to Inches

in = ft × 12

Multiply the value in Feet by 12

Take your value in Feet
Multiply by 12
Read the result in Inches

Common Feet to Inches Conversions

Feet (ft)	Inches (in)	Status
0.25 ft	3 in
0.5 ft	6 in
1 ft	12 in
2 ft	24 in
3 ft	36 in
4 ft	48 in
5 ft	60 in
6 ft	72 in
8 ft	96 in
10 ft	120 in
12 ft	144 in
20 ft	240 in
50 ft	600 in
100 ft	1,200 in
500 ft	6,000 in
1,000 ft	12,000 in

Good to Know About Feet to Inches Conversion

Americans express height almost exclusively in feet and inches. Saying 'I'm 70 inches tall' sounds unusual; 'five foot ten' is natural. The foot-inch system is one of the few measurement conventions shared across all demographics in the US.

Feet to Inches: What You Need to Know

A person who is 5'10" is 70 inches tall. Standard interior doors are 80 inches (6 feet 8 inches) tall. Lumber dimensions, window sizes, and countertop heights are routinely specified in both feet and inches. Converting between the two is a daily occurrence in American construction, home improvement, and everyday measurement.

What is a Foot? ft

An imperial unit of length equal to 12 inches or 0.3048 meters. Used in the US and UK for height, altitude, and construction.

Imperial Us-customary height altitude real estate

Learn more about Foot →

What is a Inch? in

An imperial unit of length equal to exactly 2.54 centimeters. Commonly used in the US and UK for screen sizes, body measurements, and construction.

Imperial Us-customary screen sizes construction (US) body measurements

Learn more about Inch →

Going the other way? Use our Inches to Feet converter.

Feet to Inches FAQ

One foot contains exactly 12 inches. This relationship has been standard in English measurement systems for centuries.
Multiply the number of feet by 12. For mixed measurements, multiply the feet by 12 and add the remaining inches. Example: 5 feet 9 inches = (5 × 12) + 9 = 69 inches.
The base-12 (duodecimal) system was favored historically because 12 is divisible by 2, 3, 4, and 6, making fractions easier to work with. This is the same reason a clock has 12 hours and a year has 12 months.

Non-Frequently Asked Questions About Feet to Inches

Questions nobody should ask - but someone did.

Because saying 'I am 70 inches tall' sounds clinical, and 'the highway is 316,800 inches long' sounds insane. Feet, yards, and miles exist to give comfortable numbers at different scales. Inches alone would require too much mental math.
No. 5 feet 11 inches is 71 inches. 6 feet is 72 inches. The 6-footer is exactly 1 inch taller. But psychologically, 6 feet feels much taller because it is a different whole number. The foot-and-inch system creates status cliffs.
Americans switch around 12-24 inches. A baby is '22 inches long.' A toddler is '2 feet 8.' Nobody says 'I am 70 inches tall' past age 2. The switch happens naturally at the boundary of absurdity, which is roughly 3 feet.