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Length
Feet to Inches
Convert feet (ft) to inches (in). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 ft = 12 in
Feet to Inches Conversion Table
Common values, ready to copy:
| 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 | 1200 in |
| 1,000 ft | 12000 in |
Formula
inches = feet × 1.20000000e+1
Length conversions use the SI definition: 1 inch is exactly 0.0254 meters and 1 mile is exactly 1,609.344 meters. The factor above is the exact ratio between foot and inch.
About Feet and Inches
Feet (ft): An ancient unit found in virtually every culture, historically based on the human foot; defined as exactly 0.3048 meters by the 1959 International Yard and Pound Agreement. Common uses: Human height in the United States, building heights, room dimensions, aviation altitudes (universally, even in metric countries), and yards/football fields in American sports.
Inches (in): From the Latin uncia meaning one-twelfth; originally a thumb-width unit, defined as exactly 2.54 centimeters since the 1959 International Yard and Pound Agreement. Common uses: US construction, screens and devices, clothing sizes (waist, chest), paper sizes, and a near-universal global unit for TV and monitor diagonals.
How the conversion works
Length conversions use the SI definition: 1 inch is exactly 0.0254 meters and 1 mile is exactly 1,609.344 meters. The factor above is the exact ratio between foot and inch.
The exact relationship is inches = feet × 1.20000000e+1, which the calculator at the top of this page applies in both directions. Type into either field and the other updates immediately.
When this conversion matters
Converting between feet and inches comes up wherever length measurements move between systems — from one country's conventions to another's, from a scientific reference to a practical specification, or from one industry's working unit to another's. The calculator and reference table above cover the everyday range; for unusual values you can type any number into either field.