Note: Fractional results are rounded to the nearest 1/64. For a more accurate answer please select 'decimal' from the options above the result.
Note: You can increase or decrease the accuracy of this answer by selecting the number of significant figures required from the options above the result.
Note: For a pure decimal result please select 'decimal' from the options above the result.
This is a measurement of speed typically used in non-metric countries for transport such as the USA. The United Kingdom also uses this on the roads although officially the metric system has been adopted. Road speed limits are given in miles per hour which is abbreviated as mph or mi/h.
Mach is a speed measurement based on the speed of sound. Since sound travels at different speeds in different conditions, the calculations here are given for 20°C in dry air at sea level. Mach is typically used in aviation and space exploration.
| Miles per hour | Mach |
|---|---|
| 0mph | 0.00Mach |
| 1mph | 0.00Mach |
| 2mph | 0.00Mach |
| 3mph | 0.00Mach |
| 4mph | 0.01Mach |
| 5mph | 0.01Mach |
| 6mph | 0.01Mach |
| 7mph | 0.01Mach |
| 8mph | 0.01Mach |
| 9mph | 0.01Mach |
| 10mph | 0.01Mach |
| 11mph | 0.01Mach |
| 12mph | 0.02Mach |
| 13mph | 0.02Mach |
| 14mph | 0.02Mach |
| 15mph | 0.02Mach |
| 16mph | 0.02Mach |
| 17mph | 0.02Mach |
| 18mph | 0.02Mach |
| 19mph | 0.02Mach |
| Miles per hour | Mach |
|---|---|
| 20mph | 0.03Mach |
| 21mph | 0.03Mach |
| 22mph | 0.03Mach |
| 23mph | 0.03Mach |
| 24mph | 0.03Mach |
| 25mph | 0.03Mach |
| 26mph | 0.03Mach |
| 27mph | 0.04Mach |
| 28mph | 0.04Mach |
| 29mph | 0.04Mach |
| 30mph | 0.04Mach |
| 31mph | 0.04Mach |
| 32mph | 0.04Mach |
| 33mph | 0.04Mach |
| 34mph | 0.04Mach |
| 35mph | 0.05Mach |
| 36mph | 0.05Mach |
| 37mph | 0.05Mach |
| 38mph | 0.05Mach |
| 39mph | 0.05Mach |
| Miles per hour | Mach |
|---|---|
| 40mph | 0.05Mach |
| 41mph | 0.05Mach |
| 42mph | 0.06Mach |
| 43mph | 0.06Mach |
| 44mph | 0.06Mach |
| 45mph | 0.06Mach |
| 46mph | 0.06Mach |
| 47mph | 0.06Mach |
| 48mph | 0.06Mach |
| 49mph | 0.06Mach |
| 50mph | 0.07Mach |
| 51mph | 0.07Mach |
| 52mph | 0.07Mach |
| 53mph | 0.07Mach |
| 54mph | 0.07Mach |
| 55mph | 0.07Mach |
| 56mph | 0.07Mach |
| 57mph | 0.07Mach |
| 58mph | 0.08Mach |
| 59mph | 0.08Mach |
