Homespeed converter
Speed Converter
Convert between mph, km/h, m/s, knots, fps, and Mach instantly.
| Unit | Value |
|---|---|
| Miles per hour (mph) | 60 |
| Kilometres per hour (km/h) | 96.561 |
| Metres per second (m/s) | 26.822 |
| Knots (kn) | 52.139 |
| Feet per second (fps) | 88 |
| Mach (Ma) | 0.079 |
Speed reference chart
Common real-world speeds for context.
| Object / activity | mph | km/h |
|---|---|---|
| Walking (average) | 3.1 | 5 |
| Cycling (casual) | 12 | 19 |
| Car (highway) | 70 | 113 |
| Commercial airliner | 575 | 925 |
| Speed of sound (Mach 1) | 767 | 1,235 |
| Low Earth orbit | 17,500 | 28,200 |
Which unit is used where?
- mph — Road speed limit standard in the US, UK, and a few other countries.
- km/h — Road speed limit standard in most countries worldwide.
- m/s — Scientific standard (SI unit of speed); used in physics and engineering.
- Knots — Standard in aviation and maritime navigation (1 knot = 1 nautical mile/hour).
- Mach — Used for aircraft and missiles; Mach 1 = speed of sound at sea level.
Frequently Asked Questions
Multiply miles per hour by 1.60934. For example, 60 mph = 96.56 km/h. To go the other way, divide km/h by 1.60934.