Convert Feet per Second to Mach 1
Convert Feet per Second (ft/s) to Mach 1 (Ma) instantly and accurately.
Conversion Formula
Ma = ft/s × 0.0008957066032
About Feet per Second
A foot per second (ft/s) = exactly 0.3048 m/s - the primary speed unit in US ballistics, hydraulics, and gas dynamics. .308 Winchester muzzle velocity ~2,750 ft/s; 9mm pistol 1,200-1,400 ft/s; .50 BMG 2,910 ft/s. Speed of sound at sea level 1,116 ft/s. River channel mean velocities 0.5-6 ft/s; NFPA sprinkler pipe flows also in ft/s. 1 ft/s = 0.3048 m/s = 1.09728 km/h = 60 ft/min.
About Mach 1
Mach 1 = the speed of sound in dry air at ISA sea-level (15°C, 101.325 kPa) = exactly 340.29 m/s (1,225 km/h; 761 mph). Chuck Yeager first exceeded it on 14 October 1947 in the Bell X-1. At 35,000 ft cruise altitude (−56.5°C), it falls to 295.1 m/s. Flight regimes: subsonic
Quick Reference Table
| Feet per Second (ft/s) | Mach 1 (Ma) |
|---|---|
| 1 ft/s | 0.000895707 Ma |
| 2 ft/s | 0.00179141 Ma |
| 5 ft/s | 0.00447853 Ma |
| 10 ft/s | 0.00895707 Ma |
| 25 ft/s | 0.0223927 Ma |
| 50 ft/s | 0.0447853 Ma |
| 100 ft/s | 0.0895707 Ma |