Kilometer per Hour to Mach Converter
Convert Kilometers per Hour to Mach
Quick Conversions
How to Convert Kilometers per Hour to Mach
Converting kilometers per hour (km/h) to Mach is a common conversion in aerodynamics and fluid dynamics. Mach number is the ratio of the speed of an object to the speed of sound in the surrounding medium.
Formula
Mach = Kilometers per Hour ÷ 1234.8
or
mach = km/h ÷ 1234.8
Step-by-step process
- Take the measurement in kilometers per hour
- Divide that number by 1234.8 (the speed of sound in dry air at 20°C)
- The result is the equivalent Mach number
Examples
- 1234.8 km/h = 1 Mach
- 2469.6 km/h = 2 Mach
- 617.4 km/h = 0.5 Mach
When to Convert Kilometers per Hour to Mach
This conversion is useful in aviation, aerospace engineering, and fluid dynamics, particularly when dealing with high-speed phenomena and supersonic flight.
Common Kilometers per Hour to Mach Conversions
Here is a table of common km/h to Mach conversions for quick reference:
| Kilometers per Hour (km/h) | Mach (mach) | Kilometers per Hour (km/h) | Mach (mach) |
|---|---|---|---|
| 1 | 8.1E-4 | 100 | 0.081 |
| 10 | 8.1E-3 | 200 | 0.162 |
| 50 | 0.0405 | 1234.8 | 1 |
| 1000 | 0.81 | 10,000 | 8.1 |
Frequently Asked Questions
What is Kilometer per Hour (km/h)?
Kilometer per hour (km/h) is a unit of speed, representing the distance in kilometers traveled per hour. It is commonly used for speed limits and vehicle speeds in many countries.
What is Mach?
Mach is a dimensionless quantity representing the ratio of flow velocity past a boundary to the local speed of sound. Mach 1 is the speed of sound.