Kilometer/Hour to Foot/Second (km/h to ft/s)
Result
0.9113444153 Foot/Second
Formula
ft/s = km/h × 0.9113444153
1 km/h = 0.9113444153 ft/s, and 1 ft/s = 1.09728 km/h.
Speed units are a length divided by a time: 1 km/h = 1/3.6 m/s, 1 mph = 0.44704 m/s exactly, and 1 knot = 1 nautical mile per hour = 1,852/3,600 m/s.
Worked examples
- 1 km/h × 0.9113444153 = 0.91134442 ft/s
- 10 km/h × 0.9113444153 = 9.1134442 ft/s
- 100 km/h × 0.9113444153 = 91.134442 ft/s
Common mistakes
- A knot is a nautical mile per hour, so 1 kn = 1.852 km/h and 1.15078 mph — not 1 mph.
- Weather services quote wind in km/h, m/s, mph or knots depending on country; check the unit before comparing forecasts.
Kilometer/Hour to Foot/Second table
| Kilometer/Hour (km/h) | Foot/Second (ft/s) |
|---|---|
| 1 | 0.91134442 |
| 2 | 1.8226888 |
| 5 | 4.5567221 |
| 10 | 9.1134442 |
| 20 | 18.226888 |
| 50 | 45.567221 |
| 100 | 91.134442 |
| 1,000 | 911.34442 |
The units
- Kilometer/Hour (km/h)
- Kilometres per hour: 1 km/h = 1/3.6 m/s ≈ 0.27778 m/s.
- Foot/Second (ft/s)
- 1 Foot/Second = 0.3048 Meter/Second.
Sources for these factors
- Guide for the Use of the International System of Units (SP 811), Appendix B: conversion factors — NIST
- Handbook 44 (2024), Appendix C: General Tables of Units of Measurement — NIST
Last reviewed against these sources. An automated check recomputes every factor from its definition on each build. How we check accuracy