To convert meters per second to mach, multiply by 0.002938669958.
The calculation uses 1 m/s = 0.002938669958 Mach. Results are displayed to at most 10 significant digits. Definitions can be exact while a displayed decimal is rounded. Match the displayed precision to your original measurement.
Assumes a sound speed of 340.29 m/s, approximately dry air at 15 °C. Actual Mach conversion depends on the medium and temperature.
The formula
m/s- Input unit: meters per second
Mach- Output unit: mach
How to use this calculator
- Enter a value in m/s.
- Multiply by the stored conversion factor.
- Read the result in Mach; divide by the same factor to convert back.
Worked examples
Worked conversion
1 m/s × 0.002938669958 ≈ 0.002938669958 Mach.
Reverse conversion
0.002938669958 Mach ÷ 0.002938669958 ≈ 1 m/s. Rounding intermediate values can change the last displayed digit.
Frequently asked questions
What factor does this converter use?
It uses 0.002938669958 Mach per m/s. Assumes a sound speed of 340.29 m/s, approximately dry air at 15 °C. Actual Mach conversion depends on the medium and temperature.
Why can another converter show a slightly different answer?
Check the unit convention first (such as US versus Imperial or decimal versus binary), then compare rounding. Measurement uncertainty is separate from the unit conversion.
m/s to Mach table
| m/s | Mach (rounded) |
|---|---|
| 0 | 0 |
| 1 | 0.002938669958 |
| 2 | 0.005877339916 |
| 5 | 0.01469334979 |
| 10 | 0.02938669958 |
| 100 | 0.2938669958 |