Feet to inches

Multiply feet by 12 to get inches.

1 ft = 12 inNIST HB 44

Convert

48in

4 ft = 48 in

How to convert feet to inches

The inch is exactly 2.54 centimetres (0.0254 m), by the 1959 international agreement. The foot is exactly 0.3048 metres, by the 1959 international yard-and-pound agreement.

Worked example — 4 ft: 4 × 12 = 48 in.

Feet to inches table

Common conversions. The reverse table is on inches to feet.
Feet	Inches
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

Reverse and related

inches → feetreverse conversion cm → in1 cm = 0.393701 in in → cm1 in = 2.54 cm m → ft1 m = 3.2808 ft ft → m1 ft = 0.3048 m mm → in1 mm = 0.0393701 in in → mm1 in = 25.4 mm

About feet and inches

Foot (ft)

1 ft = 12 in

Definition. Exactly 0.3048 metres, by the 1959 international yard-and-pound agreement

History and origin

The foot is an ancient unit based roughly on a human foot, and its length varied from place to place for centuries. The modern international foot was fixed at exactly 0.3048 metres by the 1959 yard and pound agreement.

Current use

The foot is the everyday unit of length in the United States for height, rooms and construction, and is still widely used in the United Kingdom.

Source: International Yard and Pound Agreement (1959); NIST Handbook 44, App. C

Inch (in)

1 in = 0.0833333 ft

Definition. Exactly 2.54 centimetres (0.0254 m), by the 1959 international agreement

History and origin

The inch takes its name from the Latin uncia, a twelfth part, and has always been one twelfth of a foot. The 1959 agreement fixed it at exactly 2.54 centimetres.

Current use

Inches are used for screen and TV sizes worldwide, and in the United States for height, lumber and hardware.

Source: International Yard and Pound Agreement (1959); NIST Handbook 44, App. C

Where people use this

Feet: height in the US, room dimensions, construction. Inches: screen sizes, height, lumber and hardware. 1 foot is exactly 12 inches.

How we know this is right

The factor is fixed by the standards that define the units, not chosen — so it is exact, not a measurement:

1 in = 0.08333333333 ft, so 1 ft = 1 ÷ 0.08333333333 = 12 in.

Every value is carried to full double precision; the display is rounded.

Both units are defined in International Yard and Pound Agreement (1959); NIST Handbook 44, App. C.

Questions people ask

How many inches are in a foot?

One foot is exactly 12 inches.

How many inches is 5 feet?

5 feet is 60 inches.

What is 2.5 ft in inches?

2.5 feet is 30 inches.

All foot conversions

Centimetres to feet1 cm = 0.0328084 ft Feet to centimetres1 ft = 30.48 cm Feet to metres1 ft = 0.3048 m Metres to feet1 m = 3.2808 ft Inches to feet1 in = 0.0833333 ft Miles to feet1 mi = 5,280 ft Yards to feet1 yd = 3 ft Feet to miles1 ft = 0.000189394 mi Feet to yards1 ft = 0.333333 yd