Inches to Feet
Convert inches (in) to feet (ft). Both measure distance and dimension, and the conversion comes up in construction, navigation, sports work.
The Formula
``
feet = inches × 0.0833333333333
inches = feet × 12
`
One inch is 0.083333 feet, and one foot is 12 inches.
Conversion Table
| Inches | Feet |
|---|---|
| 1 in | 0.083333 ft |
| 2 in | 0.166667 ft |
| 5 in | 0.416667 ft |
| 10 in | 0.833333 ft |
| 25 in | 2.0833 ft |
| 50 in | 4.1667 ft |
| 100 in | 8.3333 ft |
| 500 in | 41.6667 ft |
| 1,000 in | 83.3333 ft |
The Other Direction
| Feet | Inches |
|---|---|
| 1 ft | 12 in |
| 2 ft | 24 in |
| 5 ft | 60 in |
| 10 ft | 120 in |
| 25 ft | 300 in |
| 50 ft | 600 in |
| 100 ft | 1,200 in |
| 500 ft | 6,000 in |
| 1,000 ft | 12,000 in |
What Each Unit Is
Inches (in) — exactly 2.54 centimetres — an exact figure, not a rounded one. From the Latin uncia, one twelfth (of a foot); the exact metric value was agreed in 1959.
Feet (ft) — exactly 0.3048 metres, or one third of a yard. A human foot, standardised across centuries of conflicting local definitions.
A Sense of Scale
A thumb is about an inch wide- Screens are measured diagonally in inches
- US rainfall is in inches
- A ceiling is 8–9 ft
- Aviation altitude is always in feet
- A door is about 6.7 ft
Precision
The factor 0.0833333333333 is exact by international agreement, not a rounded approximation. Any imprecision in a result comes from your input, not the conversion.
Watch Out For
- Because the inch is exactly 2.54 cm, inch↔cm conversions are exact and any rounding you see comes from your own input precision, not the factor.
In Code
`javascript
const inchToFoot = (value) => value * 0.0833333333333;
``
Where This Conversion Comes Up
- Construction
- Navigation
- Sports
- Sewing
- Mapping
How Many Decimals Do You Need?
Rounding the factor costs accuracy, and how much depends on the factor. Converting 137 in with the factor truncated at each decimal place:
| Decimals kept | Factor | 137 in becomes | Error |
|---|---|---|---|
| 0 | 0 | 0 | 100.0000% |
| 1 | 0.1 | 13.7 | 20.0000% |
| 2 | 0.08 | 10.96 | 4.0000% |
| 3 | 0.083 | 11.371 | 0.4000% |
| 4 | 0.0833 | 11.4121 | 0.0400% |
The right number of significant figures is set by your input, not by the converter. If you measured inches to three significant figures, the answer in feet is only good to three — writing more digits claims precision the measurement never had.