Speed Converter
Convert m/s, km/h, ft/s, mph and knots instantly.
Inputs
m/s
km/h
ft/s
mph
kn
About Speed Units
- The metre per second (m/s) is the SI unit of speed, derived from the base units of length and time. It is used in scientific calculations, physics and engineering contexts. 1 m/s = 3.6 km/h.
- The kilometre per hour (km/h) is the standard everyday speed unit in most countries for road speeds and weather. The mile per hour (mph) is used in the US and UK for the same purposes.
- The knot is a nautical and aviation unit: 1 knot = 1 nautical mile per hour = 1.852 km/h exactly. It remains the official unit for aircraft and ship speeds worldwide under ICAO and IMO standards.
- Quick reference: 1 m/s = 3.6 km/h = 2.23694 mph = 1.94384 kn · 1 km/h = 0.27778 m/s = 0.621371 mph · 1 mph = 1.60934 km/h = 0.868976 kn.
| 1 单位 | = m/s | = km/h | = mph |
|---|---|---|---|
| 米/秒(m/s) | 1 | 3.6 | 2.23694 |
| 千米/小时(km/h) | 0.27778 | 1 | 0.621371 |
| 英尺/秒(ft/s) | 0.3048 | 1.09728 | 0.681818 |
| 英里/小时(mph) | 0.44704 | 1.60934 | 1 |
| 节(kn) | 0.514444 | 1.852 | 1.15078 |