Miles per Hour to Kilometers per Hour Converter
Convert miles per hour to kilometers per hour using the formula mph × 1.609344 = km/h. The calculator below shows higher precision results. The reference table is rounded for readability.
Formula and Step-by-Step
Step-by-step: 1 mph to km/h
- Start with 1 mph
- Multiply by 1.609344: 1 × 1.609344 = 1.61
- Result: 1 mph = 1.61 km/h
Conversion Table
Common miles per hour to kilometers per hour values. The table and calculator both use the same conversion formula shown above.
| Miles per Hour (mph) | Kilometers per Hour (km/h) |
|---|---|
| 1 mph | 1.61 km/h |
| 2 mph | 3.22 km/h |
| 5 mph | 8.05 km/h |
| 10 mph | 16.09 km/h |
| 25 mph | 40.23 km/h |
| 50 mph | 80.47 km/h |
| 100 mph | 160.93 km/h |
| 250 mph | 402.34 km/h |
| 500 mph | 804.67 km/h |
| 1,000 mph | 1,609.34 km/h |
Common Speeds in km/h
- 30 mph = 48.3 km/h, residential speed limit
- 60 mph = 96.6 km/h, highway speed in the US
- 70 mph = 112.7 km/h, UK motorway speed limit
- 100 mph = 160.9 km/h, high-speed driving
Quick Mental Conversion
For a rough estimate, multiply mph by 1.6. For example, 60 mph × 1.6 = 96 km/h. The exact answer is 96.56 km/h.
What Are Miles per Hour and Kilometers per Hour?
What is a Mile per Hour?
Miles per hour (mph) is a unit of speed used primarily in the United States and United Kingdom for road speed limits and vehicle speeds.
What is a Kilometer per Hour?
Kilometers per hour (km/h) is a unit of speed used by most countries worldwide for road speed limits and vehicle speeds.
Why convert miles per hour to kilometers per hour?
People typically convert miles per hour to kilometers per hour when driving in countries that use km/h and needing to understand speed limits.