Convert miles per hour to Mach
1 mph = 0.0013137 M. Change the amount below, or read the formula and the reference table further down.
1 mile per hour equals
Mach
1 mph = 0.0013137 M
The formula
Miles per hour and Mach both measure speed from the same zero, so a single multiplier does the job.
M = mph × 0.001313703
Going the other way? Convert Mach to miles per hour.
Miles per hour to Mach table
Common values, rounded for reading.
| Miles per hour (mph) | Mach (M) |
|---|---|
| 1 | 0.001314 |
| 2 | 0.002627 |
| 3 | 0.003941 |
| 4 | 0.005255 |
| 5 | 0.006569 |
| 6 | 0.007882 |
| 7 | 0.009196 |
| 8 | 0.01051 |
| 9 | 0.011823 |
| 10 | 0.013137 |
| 15 | 0.019706 |
| 20 | 0.026274 |
| 25 | 0.032843 |
| 30 | 0.039411 |
| 40 | 0.052548 |
| 50 | 0.065685 |
| 75 | 0.098528 |
| 100 | 0.13137 |
| 250 | 0.328426 |
| 500 | 0.656852 |
| 1,000 | 1.3137 |
Questions people ask
- How many Mach are in a mile per hour?
- One mile per hour equals 0.001313703 Mach.
- How do I convert miles per hour to Mach by hand?
- Multiply the number of miles per hour by 0.001313703. For a rough check, 0.001 is close enough for most everyday use.
- What is 1 mile per hour in Mach?
- 1 mile per hour is 0.0013137 Mach.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.