How many Mach are in 1 foot per second?

1 foot per second equals 0.000895707 Mach.

How many Mach are in 10 feet per second?

10 ft/s equals 0.00895707 Mach.

Use the reverse converter: 1 Mach equals 1116.44 ft/s.

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

To convert feet per second to Mach, multiply the value by 0.000895706603.

Mach = ft/s × 0.000895706603

140 ft/s × 0.000895706603 = 0.1254 Mach

Foot Per Second (ft/s): Used in US engineering and ballistics. Exactly 0.3048 metres per second.
Mach (Mach): The speed of sound, used in aviation. Here 1 Mach is 340.29 m/s, the standard value at sea level and 15 °C.

How do I convert feet per second to Mach?: To convert feet per second to Mach, multiply the value by 0.000895706603.
How many Mach are in 1 foot per second?: 1 foot per second equals 0.000895707 Mach.
How many Mach are in 10 feet per second?: 10 ft/s equals 0.00895707 Mach.
How do I convert Mach back to feet per second?: Use the reverse converter: 1 Mach equals 1116.44 ft/s.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.