Feet to Inches
An instant feet-to-inches converter, with the formula and a reference table below.
| Feet | Inches |
|---|---|
| 1 ft | 12 in |
| 2 ft | 24 in |
| 3 ft | 36 in |
| 5 ft | 60 in |
| 10 ft | 120 in |
| 25 ft | 300 in |
| 50 ft | 600 in |
| 100 ft | 1200 in |
How to use
- Enter a value in the Feet field.
- The Inches figure appears immediately — no button to press.
- Typing in the Inches field converts back to Feet the same way.
- Use the reference table for the values that come up most often.
Feet to Inches formula
The factor from feet to inches is 12.
in = ft × 12
Put another way, one foot is exactly 12 inches.
Why this factor: the foot and the inch are both defined against the meter, so dividing one definition by the other gives 12 directly. Both definitions are set out in full below.
To go the other way, divide by 12 — or use the Inches to Feet converter, which is the same calculation reversed.
Worked example
Start with 12 ft. Multiply by 12 to get 144 in.
12 ft × 12 = 144 in
The converter above does this for any value you type, in either direction.
What is a foot?
A foot is twelve inches, the primary unit for human-scale dimensions in the US.
Definition: Exactly 0.3048 meter since 1959 — one third of the international yard.
Where it is used: Building heights, room dimensions, aviation altitude worldwide, and personal height in the US and UK.
Worth knowing: The US survey foot, very slightly longer, was used in land surveying until it was officially retired at the end of 2022.
What is an inch?
An inch is one twelfth of a foot, used for small dimensions and for screen and wheel sizes globally.
Definition: Exactly 25.4 millimeters since the 1959 International Yard and Pound Agreement — an exact, not approximate, relation.
Where it is used: Screen diagonals, pipe and fastener sizes, tire and wheel diameters, and print layout worldwide.
Feet vs Inches
The foot and the inch belong to the same family of units, so converting between them is usually a matter of shifting a decimal point or applying a small whole-number factor.
Frequently asked questions
How many inches are in a foot?
One foot equals 12 inches.
What is the formula to convert feet to inches?
Multiply the number of feet by 12. To reverse it, divide by 12 instead.
How do I convert inches back to feet?
Divide by 12, which is the same as multiplying by 0.0833333333.
How many inches are in 10 feet?
10 ft works out to 120 in.
Is there anything to watch out for with feet?
The US survey foot, very slightly longer, was used in land surveying until it was officially retired at the end of 2022.
How is the foot defined?
Exactly 0.3048 meter since 1959 — one third of the international yard.