Convert Feet to Kilometers
1 foot (ft) equals 0.0003048 kilometers (km).
1 ft = 0.0003048 km
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk foot to kilometer converter to paste a column from Excel.
How to Convert Foot to Kilometer
- 1 ft = 0.0003048 km
- 1 km = 3280.839895 ft
- Example: convert 15 ft to km: 15 ft = 15 × 0.0003048 km = 0.004572 km
Reference conditions. ft: The international yard and pound agreement (1959) fixed 1 yard = 0.9144 m exactly, so the inch, foot and mile are exact.
Formula
km = ft × 0.0003048
or km = ft ÷ 3280.839895013
Derivation from SI units:
- 1 ft = 12 in = 0.3048 m (exact)
- 1 km = 10³ m
- 1 ft = 0.3048 m ÷ 1000 m per km = 0.0003048 km
Both units are defined exactly, so the factor is exact. Foot definition: foot; Kilometer definition: kilometer.
Worked examples
- A reading of 6 ft converts to 0.0018288 km.
6 ft × 0.0003048 = 0.0018288 km - A value of 30 ft is 0.009144 km.
30 ft × 0.0003048 = 0.009144 km
Foot to Kilometer conversion table
| Feet (ft) | Kilometers (km) |
|---|---|
| 0.5 ft | 0.0001524 km |
| 1 ft | 0.0003048 km |
| 2 ft | 0.0006096 km |
| 3 ft | 0.0009144 km |
| 4 ft | 0.0012192 km |
| 5 ft | 0.001524 km |
| 5.5 ft | 0.0016764 km |
| 6 ft | 0.0018288 km |
| 8 ft | 0.0024384 km |
| 10 ft | 0.003048 km |
| 12 ft | 0.0036576 km |
| 15 ft | 0.004572 km |
| 20 ft | 0.006096 km |
| 25 ft | 0.00762 km |
| 30 ft | 0.009144 km |
| 50 ft | 0.01524 km |
| 100 ft | 0.03048 km |
| 500 ft | 0.1524 km |
| 1000 ft | 0.3048 km |
| 5280 ft | 1.609344 km |
| 10000 ft | 3.048 km |
| 35000 ft | 10.668 km |
Where it's used
Feet are used for building dimensions and ceiling heights in the US, while kilometers appear in road distances and speed (km/h). Both measure length and distance, so the conversion is a fixed factor.
Foot to other length units
| Conversion | 1 ft equals |
|---|---|
| foot to meter | 0.3048 m |
| foot to kilometer | 0.0003048 km |
| foot to centimeter | 30.48 cm |
| foot to millimeter | 304.8 mm |
| foot to micrometer | 304800 µm |
| foot to nanometer | 304800000 nm |
| foot to angstrom | 3048000000 Å |
| foot to mile | 0.0001893939394 mi |
| foot to yard | 0.3333333333 yd |
| foot to inch | 12 in |
| foot to mil | 12000 mil |
| foot to nautical mile | 0.0001645788337 nmi |
Frequently asked questions
How many kilometers are in 1 foot?
1 ft = 0.0003048 km.
How do I convert feet to kilometers?
Multiply the value in ft by 0.0003048, or divide it by 3280.839895. For example, 15 ft × 0.0003048 = 0.004572 km.
Is the ft to km conversion exact?
Yes. Both units are defined exactly, and 1 ft is exactly 0.0003048 km.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "foot (ft)".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Feet to Kilometers. Retrieved October 17, 2026, from https://scientificconverters.com/length/feet-to-kilometers/
IEEE
Scientific Converters, "Convert Feet to Kilometers," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/length/feet-to-kilometers/