ft to inch Converter - Foot to Inch
Foot (ft) to Inch (in) (inch)
Direct answer
1 ft = 12 inch
inch = ft × 12
Converter
Conversion formula
inch = ft × 12
ft = inch × 0.083333333333
Example: 10 ft = 10 × 12 = 120 inch.
Common conversion table
| ft | inch |
|---|---|
| 1 ft | 12 inch |
| 2 ft | 24 inch |
| 5 ft | 60 inch |
| 10 ft | 120 inch |
| 20 ft | 240 inch |
| 50 ft | 600 inch |
| 100 ft | 1,200 inch |
| 1,000 ft | 12,000 inch |
Conversion derivation
Express both ft and inch in the same base unit m (meter), then cancel the shared base unit.
- 1
Rewrite ft in the base unit
- 2
Rewrite inch in the base unit
- 3
Forward conversion
- 4
Reverse conversion
AI explanation for this conversion
This pre-generated explanation is schema-checked. Numeric results still come from the page formula and calculator.
Foot (ft) to Inch (in) Conversion Factor
This conversion factor states that 1 foot is exactly 12 inches. This is a defined relationship within the imperial and US customary systems of measurement.
Definition
A foot is a unit of length, and an inch is a smaller unit of length. The conversion factor between them is a fixed integer ratio.
Principle
The conversion factor is derived by expressing both the foot and the inch in terms of the same base unit, the meter. Dividing the meter equivalent of a foot by the meter equivalent of an inch gives the exact ratio of 12.
Assumptions
- The conversion uses the defined relationships: 1 foot = 0.3048 meters and 1 inch = 0.0254 meters.
- The base unit (meter) cancels out when deriving the direct foot-to-inch ratio.
Cautions
- The provided conversion factor (12.000000000000002) is a floating-point representation of the exact integer 12. For most practical purposes, the factor is exactly 12.
- The reverse factor (0.08333333333333333) is a floating-point representation of the exact fraction 1/12.
FAQ
How many inch are in 1 ft?
1 ft = 12 inch.
How many inch are in 10 ft?
10 ft = 120 inch.
How many inch are in 100 ft?
100 ft = 1,200 inch.
What is the formula to convert ft to inch?
Use inch = ft × 12.
How many ft are in 1 inch?
1 inch = 0.083333333333 ft.
What should I check when converting ft to inch?
Use the conversion factor and round the result to the precision required by your calculation.