Convert Metres per Second to Miles per Second
Convert Metres per Second (m/s) to Miles per Second (mi/s) instantly and accurately.
Conversion Formula
mi/s = m/s × 0.0006213711922
About Metres per Second
The metre per second (m/s) is the SI unit of speed. Brisk walking ~1.4 m/s; Usain Bolt's peak sprint ~12.4 m/s; speed of sound in air at 20°C 343.2 m/s; in water 1,481 m/s. Rifle muzzle velocities 370-1,200 m/s. Speed of light = exactly 299,792,458 m/s (the defined constant from which the metre is derived since 1983). 1 m/s = 3.6 km/h = 2.23694 mph = 1.94384 kn.
About Miles per Second
A mile per second (mi/s) = exactly 1,609.344 m/s - above the fastest air-breathing aircraft. NASA X-43A scramjet: 2.9 km/s ≈ 1.8 mi/s (Mach 9.6). Earth's orbital speed around the Sun: ~18.5 mi/s (29.8 km/s). Light travels ~186,282 mi/s in vacuum - the classic imperial figure still used in popular astronomy. Tunguska impactor entered Earth's atmosphere at ~9-11 mi/s. 1 mi/s = 3,600 mph = 3,128.3 kn.
Quick Reference Table
| Metres per Second (m/s) | Miles per Second (mi/s) |
|---|---|
| 1 m/s | 0.000621371 mi/s |
| 2 m/s | 0.00124274 mi/s |
| 5 m/s | 0.00310686 mi/s |
| 10 m/s | 0.00621371 mi/s |
| 25 m/s | 0.0155343 mi/s |
| 50 m/s | 0.0310686 mi/s |
| 100 m/s | 0.0621371 mi/s |