Speed of Sound Air to Mach Number Converter
CommonMeters per second, km/h, mph and more.
How to convert Speed of Sound Air to Mach Number
Multiply the speed of sound air value by 1: 1 Mach 1 = 1 M. Going the other way, 1 M = 1 Mach 1, so divide by 1 or use the Mach Number to Speed of Sound Air converter.
About these units
Speed of Sound Air (Mach 1)
The speed of sound in air at 20 °C is about 343 meters per second (1,235 km/h). It falls as the air gets colder, so the exact value depends on conditions.
Mach Number (M)
Mach number is speed divided by the local speed of sound; this converter uses 343 m/s, the value in air at 20 °C. Mach 1 at sea level is therefore about 1,235 km/h.
Speed of Sound Air to Mach Number conversion table
| Speed of Sound Air (Mach 1) | Mach Number (M) |
|---|---|
| 1 Mach 1 | 1 M |
| 2 Mach 1 | 2 M |
| 3 Mach 1 | 3 M |
| 4 Mach 1 | 4 M |
| 5 Mach 1 | 5 M |
| 10 Mach 1 | 10 M |
| 20 Mach 1 | 20 M |
| 25 Mach 1 | 25 M |
| 50 Mach 1 | 50 M |
| 100 Mach 1 | 100 M |
| 500 Mach 1 | 500 M |
| 1,000 Mach 1 | 1,000 M |
More speed of sound air conversions
- Speed of Sound Air to Speed of Light1 Mach 1 = 1.1441e-6 c
- Speed of Sound Air to Meters per Second1 Mach 1 = 343 m/s
- Speed of Sound Air to Miles per Hour1 Mach 1 = 767.269 mph
- Speed of Sound Air to Centimeters per Second1 Mach 1 = 34,300 cm/s
- Speed of Sound Air to Kilometers per Second1 Mach 1 = 0.343 km/s
See every unit on the Speed Converter.