How to Convert Feet to Inches (ft to in)
Length conversions come up when reading overseas furniture specs, cycling the Round Island Route in kilometres while a foreign app shows miles, or checking marine distances in the Singapore Strait in nautical miles. This guide shows how to convert feet into inches by hand, with examples and a quick-reference table.
The conversion
To convert feet to inches, multiply the value by 12. To go the other way, divide by the same number (or multiply by 0.0833333333). For a quick estimate, multiply by about 12.
Inches = feet × 12
Worked examples
- 3 ft = 36 in
- 12.5 ft = 150 in
- 75 ft = 900 in
Feet to Inches table
| Feet | Inches |
|---|---|
| 1 ft | 12 in |
| 2 ft | 24 in |
| 5 ft | 60 in |
| 10 ft | 120 in |
| 20 ft | 240 in |
| 25 ft | 300 in |
| 50 ft | 600 in |
| 100 ft | 1,200 in |
| 250 ft | 3,000 in |
| 500 ft | 6,000 in |
| 1,000 ft | 12,000 in |
Common questions
Is ft to in exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Inches to Feet converter.
Mistakes to avoid
Multiplying when you should divide
Converting to a smaller unit gives a bigger number, and converting to a larger unit gives a smaller one. If your answer moves the wrong way, you have inverted the factor.
Forgetting squared and cubed units
Area and volume factors are the length factor squared or cubed, so 1 m² is about 10.76 sq ft, not 3.28.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Background
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
For any value, use the Feet to Inches Converter or browse all length converters.
Run your own numbers: Feet to Inches Converter