Convert Metres per Second to Speed of Light
Convert Metres per Second (m/s) to Speed of Light (c) instantly and accurately.
Conversion Formula
c = m/s × 3.335640952e-9
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 Speed of Light
The speed of light in vacuum (c) = exactly 299,792,458 m/s - the defined SI constant from which the metre is derived (since 1983) and the universal speed limit of causality. Light from the Sun reaches Earth in 8 min 20 s; from the Moon in 1.28 s; from Proxima Centauri in 4.24 years. Mars communication delay 3-22 minutes. In optical fibre (n ≈ 1.467), c/n ≈ 200,000 km/s. GPS clocks must correct for both special and general relativistic effects. c = 299,792,458 m/s.
Quick Reference Table
| Metres per Second (m/s) | Speed of Light (c) |
|---|---|
| 1 m/s | 3.336 × 10-9 c |
| 2 m/s | 6.671 × 10-9 c |
| 5 m/s | 1.668 × 10-8 c |
| 10 m/s | 3.336 × 10-8 c |
| 25 m/s | 8.339 × 10-8 c |
| 50 m/s | 1.668 × 10-7 c |
| 100 m/s | 3.336 × 10-7 c |