Feet per Second to Mach Converter
Convert feet per second (ft/s) to Mach (at 343 m/s) (Mach), with the formula, a conversion table and exact factors.
Change the values and press Calculate to work out your own figures.
Enter a speed, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.
Show the working
- 1 ft/s = 0.000888629737609 Mach
- 1 × 0.000888629737609 = 0.000888629737609 Mach
How to convert feet per second to mach
1 ft/s = 0.000888629737609 Mach, so multiply by 0.000888629737609 to go from feet per second to Mach (at 343 m/s). Going the other way, 1 Mach = 1,125.32808399 ft/s.
Mach = ft/s × 0.000888629737609 ft/s = Mach × 1,125.32808399
Worked example:
1 ft/s = 0.000888629737609 Mach 5 × 0.000888629737609 = 0.00444314868805 Mach
Feet per Second to mach table
| Feet per Second | Mach |
|---|---|
| 1 ft/s | 0.000888629737609 Mach |
| 2 ft/s | 0.00177725947522 Mach |
| 3 ft/s | 0.00266588921283 Mach |
| 4 ft/s | 0.00355451895044 Mach |
| 5 ft/s | 0.00444314868805 Mach |
| 6 ft/s | 0.00533177842566 Mach |
| 7 ft/s | 0.00622040816327 Mach |
| 8 ft/s | 0.00710903790087 Mach |
| 9 ft/s | 0.00799766763848 Mach |
| 10 ft/s | 0.00888629737609 Mach |
| 15 ft/s | 0.0133294460641 Mach |
| 20 ft/s | 0.0177725947522 Mach |
| 25 ft/s | 0.0222157434402 Mach |
| 30 ft/s | 0.0266588921283 Mach |
| 40 ft/s | 0.0355451895044 Mach |
| 50 ft/s | 0.0444314868805 Mach |
| 75 ft/s | 0.0666472303207 Mach |
| 100 ft/s | 0.0888629737609 Mach |
| 250 ft/s | 0.222157434402 Mach |
| 500 ft/s | 0.444314868805 Mach |
| 1000 ft/s | 0.888629737609 Mach |
About the units
- Feet per Second (ft/s)
- Feet per second, a US customary unit. Definition: NIST Handbook 44 (2024), Appendix C: General Tables of Units of Measurement.
- Mach (Mach)
- Mach (at 343 m/s), a specialised unit. Mach 1 is the local speed of sound, which depends on air temperature; this converter uses 343 m/s (dry air at 20 °C). In the standard sea-level atmosphere (15 °C) it is 340.3 m/s. Definition: Speed of sound in dry air at 20 °C: 343 m/s (NASA Glenn Research Center).