Feet to Inches Converter
Convert feet to inches. The formula used here is 1 foot = 12 inches. The formula is in = ft × 12; 1 ft is 12 in.
A US customary and imperial length unit equal to 12 inches.
A US customary and imperial length unit equal to 1/12 of a foot.
Start with your value in feet, then apply the formula below. It stays visible so you can catch rounding mistakes instead of just copying the output.
When the converted length drives a cut, fit, clearance, or route estimate, decide whether to round to the nearest mark, round up for safety, or keep decimals for documentation.
Many length factors are exact by definition, but practical measurements still depend on rulers, survey tools, tolerances, and how the result will be used. This page displays converted values with up to 4 decimal places by default.
| Feet | Inches |
|---|---|
| 1 ft | 12 in |
| 3 ft | 36 in |
| 6 ft | 72 in |
| 10 ft | 120 in |
| 100 ft | 1,200 in |
Useful for checking construction and DIY measurements. Use the same formula with your exact input if the measurement needs to be documented.
Useful for travel, mapping, or athletics distances. Use the same formula with your exact input if the measurement needs to be documented.
Useful for product dimensions and classroom conversions. Use the same formula with your exact input if the measurement needs to be documented.
How do I convert feet to inches?
Enter the value in feet and apply in = ft × 12. Round the inches result after the conversion, not before.
What is 1 foot in inches?
1 ft equals 12 in with the current rounding setting. Keep more decimal places when the result feeds another calculation.
What is 3 ft in in?
3 ft is 36 in. It appears in the lookup table so you can compare it with nearby amounts.
Can I convert inches back to feet?
Yes. Use the reverse Inches to Feet converter if you need to go the other direction.
How accurate is this feet to inches conversion?
The calculator runs the formula in your browser and rounds results to 4 decimal places by default. Many length factors are exact by definition, but practical measurements still depend on rulers, survey tools, tolerances, and how the result will be used.