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Mach to Feet per Second Converter

Convert Mach (at 343 m/s) (Mach) to feet per second (ft/s), 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.

About valueA number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
About toThe unit you want the answer in. Swap exchanges the two units.
Result
Result
1,125.32808399 ft/s
knots
666.738660907 kn
speed of light
1.14412484653 × 10⁻⁶ c
miles per hour
767.269148175 mph
kilometers per second
0.343 km/s
kilometers per hour
1,234.8 km/h
meters per second
343 m/s
centimeters per second
34,300 cm/s

1 Mach = 1,125.32808399 ft/s

Show the working
  1. 1 Mach = 1125.32808399 ft/s
  2. 1 × 1125.32808399 = 1125.32808399 ft/s

How to convert mach to feet per second

1 Mach = 1,125.32808399 ft/s, so multiply by 1,125.32808399 to go from Mach (at 343 m/s) to feet per second. Going the other way, 1 ft/s = 0.000888629737609 Mach.

ft/s = Mach × 1,125.32808399
Mach = ft/s × 0.000888629737609

Worked example:

1 Mach = 1125.32808399 ft/s
5 × 1125.32808399 = 5626.64041995 ft/s

Mach to feet per second table

MachFeet per Second
1 Mach1,125.32808399 ft/s
2 Mach2,250.65616798 ft/s
3 Mach3,375.98425197 ft/s
4 Mach4,501.31233596 ft/s
5 Mach5,626.64041995 ft/s
6 Mach6,751.96850394 ft/s
7 Mach7,877.29658793 ft/s
8 Mach9,002.62467192 ft/s
9 Mach10,127.9527559 ft/s
10 Mach11,253.2808399 ft/s
15 Mach16,879.9212598 ft/s
20 Mach22,506.5616798 ft/s
25 Mach28,133.2020997 ft/s
30 Mach33,759.8425197 ft/s
40 Mach45,013.1233596 ft/s
50 Mach56,266.4041995 ft/s
75 Mach84,399.6062992 ft/s
100 Mach112,532.808399 ft/s
250 Mach281,332.020997 ft/s
500 Mach562,664.041995 ft/s
1000 Mach1,125,328.08399 ft/s

About the units

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).
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.

Formula version 0.1.0Reviewed