Kilometres per hour to Miles per hour
Convert kilometres per hour to miles per hour instantly.
Kilometres per hour to Miles per hour (km/h to mph) Converter
1 kilometre per hour = 0.62137 miles per hour
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- 1 km/h = 0.62137 mph
- 5 km/h = 3.1069 mph
- 10 km/h = 6.2137 mph
- 25 km/h = 15.534 mph
- Kilometres per hourkm/h
- Miles per hourmph
- Kilometres per hourkm/h
- Miles per hourmph
How it’s calculated
mph = km/h ÷ 1.609344
- Divide the value in kilometres per hour by 1.609344.
- Equivalently, multiply by 0.6213711922.
- 1 km/h = 0.6213711922 mph · 1 mph = 1.609344 km/h
Quick examples
1 kilometre per hour = 0.62137 miles per hour · 1 mph = 1.6093 km/h
- 1 kilometre per hour = 0.62137 miles per hour
- 5 kilometres per hour = 3.1069 miles per hour
- 10 kilometres per hour = 6.2137 miles per hour
- 25 kilometres per hour = 15.534 miles per hour
- 100 kilometres per hour = 62.137 miles per hour
Kilometres per hour to miles per hour conversion table
| Kilometres per hour (km/h) | Miles per hour (mph) |
|---|---|
| 0.1 km/h | 0.062137 mph |
| 0.5 km/h | 0.31069 mph |
| 1 km/h | 0.62137 mph |
| 2 km/h | 1.2427 mph |
| 3 km/h | 1.8641 mph |
| 4 km/h | 2.4855 mph |
| 5 km/h | 3.1069 mph |
| 6 km/h | 3.7282 mph |
| 7 km/h | 4.3496 mph |
| 8 km/h | 4.971 mph |
| 9 km/h | 5.5923 mph |
| 10 km/h | 6.2137 mph |
| 15 km/h | 9.3206 mph |
| 20 km/h | 12.427 mph |
| 25 km/h | 15.534 mph |
| 30 km/h | 18.641 mph |
| 40 km/h | 24.855 mph |
| 50 km/h | 31.069 mph |
| 75 km/h | 46.603 mph |
| 100 km/h | 62.137 mph |
| 250 km/h | 155.34 mph |
| 500 km/h | 310.69 mph |
| 1,000 km/h | 621.37 mph |
About these units
Kilometre per hour (km/h)
metric (non-SI)
1 km/h ≈ 0.27777778 m/s
Source: BIPM SI Brochure (9th ed.) (SI prefixes and accepted units)
Mile per hour (mph)
US & imperial (identical)
1 mph = 0.44704 m/s (exact)
Defined as exactly 0.44704 m/s.
Source: NIST SP 811 / Handbook 44
Frequently asked questions
How do I convert kilometres per hour to miles per hour?
Use mph = km/h ÷ 1.609344. Divide the value in kilometres per hour by 1.609344.
How many miles per hour are in 1 kilometre per hour?
1 kilometre per hour (km/h) equals 0.62137 miles per hour (mph); more precisely 0.6213711922.
How many kilometres per hour are in 1 mile per hour?
1 mile per hour (mph) equals 1.6093 kilometres per hour (km/h); more precisely 1.609344.
What is 10 km/h in mph?
10 kilometres per hour = 6.2137 miles per hour.
What is a mile per hour?
Defined as exactly 0.44704 m/s.
Related conversions
Formula: mph = km/h ÷ 1.609344. Factors last reviewed 2026-10-27.