At One Place

Miles per hour to mach

1 mile per hour in mach
1 mph = 0.0013137 Mach
Mach = mph × 0.001313703018

To convert miles per hour to mach, multiply by 0.001313703018. The table below gives the values people look up most often, and the converter works for any number.

Miles per hour to mach table

Common mile per hour values converted to mach.
Miles per hour Mach
1 mph 0.0013137
2 mph 0.0026274
3 mph 0.0039411
4 mph 0.0052548
5 mph 0.0065685
10 mph 0.013137
15 mph 0.019706
20 mph 0.026274
25 mph 0.032843
30 mph 0.039411
40 mph 0.052548
50 mph 0.065685
75 mph 0.098528
100 mph 0.13137
250 mph 0.32843
500 mph 0.65685
1,000 mph 1.313703

How the conversion works

The relationship is Mach = mph × 0.001313703018. Both units measure speed, so the conversion is a fixed factor that never changes.

Mach: Speed of sound at sea level, 15 °C.

Common questions

How many mach are in one mile per hour?
One mile per hour equals 0.0013137 mach. Mach = mph × 0.001313703018.
How do you convert miles per hour to mach?
Use Mach = mph × 0.001313703018. So 10 mph is 0.013137 Mach.
How many miles per hour are in one mach?
One mach equals 761.2071 miles per hour, which is the reverse of the conversion above.
Is there more than one kind of mach?
Speed of sound at sea level, 15 °C.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked