Mach to Kilometers per Second Converter
Convert Mach (at 343 m/s) (Mach) to kilometers per second (km/s), with the formula, a conversion table and exact factors.
Change the values and press Calculate to work out your own figures.
Enter a speed, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.
Show the working
- 1 Mach = 0.343 km/s
- 1 × 0.343 = 0.343 km/s
How to convert mach to kilometers per second
1 Mach = 0.343 km/s, so multiply by 0.343 to go from Mach (at 343 m/s) to kilometers per second. Going the other way, 1 km/s = 2.91545189504 Mach.
km/s = Mach × 0.343 Mach = km/s × 2.91545189504
Worked example:
1 Mach = 0.343 km/s 5 × 0.343 = 1.715 km/s
Mach to kilometers per second table
| Mach | Kilometers per Second |
|---|---|
| 1 Mach | 0.343 km/s |
| 2 Mach | 0.686 km/s |
| 3 Mach | 1.029 km/s |
| 4 Mach | 1.372 km/s |
| 5 Mach | 1.715 km/s |
| 6 Mach | 2.058 km/s |
| 7 Mach | 2.401 km/s |
| 8 Mach | 2.744 km/s |
| 9 Mach | 3.087 km/s |
| 10 Mach | 3.43 km/s |
| 15 Mach | 5.145 km/s |
| 20 Mach | 6.86 km/s |
| 25 Mach | 8.575 km/s |
| 30 Mach | 10.29 km/s |
| 40 Mach | 13.72 km/s |
| 50 Mach | 17.15 km/s |
| 75 Mach | 25.725 km/s |
| 100 Mach | 34.3 km/s |
| 250 Mach | 85.75 km/s |
| 500 Mach | 171.5 km/s |
| 1000 Mach | 343 km/s |
About the units
- Mach (Mach)
- Mach (at 343 m/s), a specialised unit. Mach 1 is the local speed of sound, which depends on air temperature; this converter uses 343 m/s (dry air at 20 °C). In the standard sea-level atmosphere (15 °C) it is 340.3 m/s. Definition: Speed of sound in dry air at 20 °C: 343 m/s (NASA Glenn Research Center).
- Kilometers per Second (km/s)
- Kilometers per second, a metric unit. Definition: BIPM SI Brochure, 9th edition (SI units, prefixes and units accepted for use with the SI).