Feet per Second to Kilometers per Second Converter
Convert feet per second (ft/s) to kilometers per second (km/s), with the formula, a conversion table and exact factors.
Change the values and press Calculate to work out your own figures.
Enter a speed, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.
Show the working
- 1 ft/s = 0.0003048 km/s
- 1 × 0.0003048 = 0.0003048 km/s
How to convert feet per second to kilometers per second
1 ft/s = 0.0003048 km/s, so multiply by 0.0003048 to go from feet per second to kilometers per second. Going the other way, 1 km/s = 3,280.83989501 ft/s.
km/s = ft/s × 0.0003048 ft/s = km/s × 3,280.83989501
Worked example:
1 ft/s = 0.0003048 km/s 5 × 0.0003048 = 0.001524 km/s
Feet per Second to kilometers per second table
| Feet per Second | Kilometers per Second |
|---|---|
| 1 ft/s | 0.0003048 km/s |
| 2 ft/s | 0.0006096 km/s |
| 3 ft/s | 0.0009144 km/s |
| 4 ft/s | 0.0012192 km/s |
| 5 ft/s | 0.001524 km/s |
| 6 ft/s | 0.0018288 km/s |
| 7 ft/s | 0.0021336 km/s |
| 8 ft/s | 0.0024384 km/s |
| 9 ft/s | 0.0027432 km/s |
| 10 ft/s | 0.003048 km/s |
| 15 ft/s | 0.004572 km/s |
| 20 ft/s | 0.006096 km/s |
| 25 ft/s | 0.00762 km/s |
| 30 ft/s | 0.009144 km/s |
| 40 ft/s | 0.012192 km/s |
| 50 ft/s | 0.01524 km/s |
| 75 ft/s | 0.02286 km/s |
| 100 ft/s | 0.03048 km/s |
| 250 ft/s | 0.0762 km/s |
| 500 ft/s | 0.1524 km/s |
| 1000 ft/s | 0.3048 km/s |
About the units
- Feet per Second (ft/s)
- Feet per second, a US customary unit. Definition: NIST Handbook 44 (2024), Appendix C: General Tables of Units of Measurement.
- Kilometers per Second (km/s)
- Kilometers per second, a metric unit. Definition: BIPM SI Brochure, 9th edition (SI units, prefixes and units accepted for use with the SI).