To convert mach to meters per second, multiply by 340.29.
The calculation uses 1 Mach = 340.29 m/s. 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
Mach- Input unit: mach
m/s- Output unit: meters per second
How to use this calculator
- Enter a value in Mach.
- Multiply by the stored conversion factor.
- Read the result in m/s; divide by the same factor to convert back.
Worked examples
Worked conversion
1 Mach × 340.29 ≈ 340.29 m/s.
Reverse conversion
340.29 m/s ÷ 340.29 ≈ 1 Mach. Rounding intermediate values can change the last displayed digit.
Frequently asked questions
What factor does this converter use?
It uses 340.29 m/s per Mach. 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.
Mach to m/s table
| Mach | m/s (rounded) |
|---|---|
| 0 | 0 |
| 1 | 340.29 |
| 2 | 680.58 |
| 5 | 1701.45 |
| 10 | 3402.9 |
| 100 | 34029 |