Home› Conversions› Length› Feet to Kilometers
Length
Feet to Kilometers
Convert feet (ft) to kilometers (km). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 ft = 0.000305 km
Feet to Kilometers Conversion Table
Common values, ready to copy:
| feet | kilometers |
|---|---|
| 1 ft | 0.000305 km |
| 2 ft | 0.00061 km |
| 5 ft | 0.001524 km |
| 10 ft | 0.003048 km |
| 25 ft | 0.00762 km |
| 50 ft | 0.01524 km |
| 100 ft | 0.03048 km |
| 1,000 ft | 0.3048 km |
Formula
kilometers = feet × 3.04800000e-4
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 kilometer.
About Feet and Kilometers
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.
Kilometers (km): A thousand meters, where the meter is the SI base unit of length defined by the speed of light. Common uses: Road distances, race lengths, geographic and astronomical small distances, and country-to-country travel measurements outside the US.
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 kilometer.
The exact relationship is kilometers = feet × 3.04800000e-4, 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 kilometers 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.