Feet per second (ft/s) to Mach (Ma) Conversion
Feet per second
Feet per second (ft/s) is a unit of speed in the US customary and imperial systems equal to approximately 0.3048 m/s or 1.09728 km/h. It is commonly used in ballistics to express projectile velocities, in structural engineering for wind speed calculations, and in sports science. The speed of sound at sea level is approximately 1,125 ft/s (343 m/s), a reference used in firearms and aeronautics.
Mach
The Mach number represents the ratio of an object's speed to the local speed of sound. Mach 1 is approximately 343 m/s (1,235 km/h) at sea level and 20 °C, but varies with temperature and altitude. Named after Austrian physicist Ernst Mach, the Mach number is fundamental in aerodynamics: subsonic is below Mach 0.8, supersonic from Mach 1.2 to 5, and hypersonic above Mach 5.
| Feet per second (ft/s) | Mach (Ma) |
|---|---|
| 0.1 ft/s | 0.0000889 Ma |
| 1 ft/s | 0.000889 Ma |
| 2 ft/s | 0.00178 Ma |
| 3 ft/s | 0.00267 Ma |
| 5 ft/s | 0.00444 Ma |
| 10 ft/s | 0.00889 Ma |
| 20 ft/s | 0.0178 Ma |
| 30 ft/s | 0.0267 Ma |
| 50 ft/s | 0.0444 Ma |
| 100 ft/s | 0.0889 Ma |
| 1000 ft/s | 0.8886 Ma |
Frequently Asked Questions (FAQ)
How many Mach are in 1 feet per second?
1 feet per second (ft/s) is exactly 0.000889 Mach (Ma).
How do I convert feet per second to Mach?
Multiply the value in feet per second by 0.000889 to get the result in Mach. Or use the converter above — type any number and see the result instantly.