Kilometers per Hour to Miles per Hour Converter
Convert kilometers per hour (km/h) to miles per hour (mph), 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 km/h = 0.621371192237 mph
- 1 × 0.621371192237 = 0.621371192237 mph
How to convert kilometers per hour to miles per hour
1 km/h = 0.621371192237 mph, so multiply by 0.621371192237 to go from kilometers per hour to miles per hour. Going the other way, 1 mph = 1.609344 km/h.
mph = km/h × 0.621371192237 km/h = mph × 1.609344
Worked example:
1 km/h = 0.621371192237 mph 5 × 0.621371192237 = 3.10685596119 mph
Kilometers per Hour to miles per hour table
| Kilometers per Hour | Miles per Hour |
|---|---|
| 1 km/h | 0.621371192237 mph |
| 2 km/h | 1.24274238447 mph |
| 3 km/h | 1.86411357671 mph |
| 4 km/h | 2.48548476895 mph |
| 5 km/h | 3.10685596119 mph |
| 6 km/h | 3.72822715342 mph |
| 7 km/h | 4.34959834566 mph |
| 8 km/h | 4.9709695379 mph |
| 9 km/h | 5.59234073014 mph |
| 10 km/h | 6.21371192237 mph |
| 15 km/h | 9.32056788356 mph |
| 20 km/h | 12.4274238447 mph |
| 25 km/h | 15.5342798059 mph |
| 30 km/h | 18.6411357671 mph |
| 40 km/h | 24.8548476895 mph |
| 50 km/h | 31.0685596119 mph |
| 75 km/h | 46.6028394178 mph |
| 100 km/h | 62.1371192237 mph |
| 250 km/h | 155.342798059 mph |
| 500 km/h | 310.685596119 mph |
| 1000 km/h | 621.371192237 mph |
About the units
- Kilometers per Hour (km/h)
- Kilometers per hour, a metric unit. Definition: BIPM SI Brochure, 9th edition (SI units, prefixes and units accepted for use with the SI).
- Miles per Hour (mph)
- Miles per hour, a US customary unit. Definition: NIST Handbook 44 (2024), Appendix C: General Tables of Units of Measurement.
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