Speed
Mach vs Kilometer/hour vs Mile/hour
Quick reference table for unit conversions with key differences.
Reference Table
| MachMach | Kilometer/hourkm/h | Mile/hourmph |
|---|---|---|
| 1 | 1,234.8 | 767.2691 |
| 5 | 6,174 | 3,836.346 |
| 10 | 12,348 | 7,672.691 |
| 25 | 30,870 | 19,181.73 |
| 50 | 61,740 | 38,363.46 |
| 100 | 123,480 | 76,726.91 |
| 200 | 246,960 | 153,453.8 |
| 500 | 617,400 | 383,634.6 |
| 1,000 | 1,234,800 | 767,269.1 |
About These Units
Mach
Mach
Symbol: Mach
Mach number represents the ratio of speed to the speed of sound (about 343 m/s). Used in aviation and aerospace.
Used in: Worldwide (aviation, aerospace)
km/h
Kilometer/hour
Symbol: km/h
Kilometers per hour is the standard speed unit for road traffic in most countries worldwide.
Used in: Worldwide (except US, UK)
mph
Mile/hour
Symbol: mph
Miles per hour is used for road speed limits and vehicle speeds in the US and UK.
Used in: United States, United Kingdom
Key Differences
- 1 Mach is equal to 1,234.8 km/h.
- 1 Mach is equal to 767.2691 mph.
- 1 km/h is equal to 0.6213712 mph.