How to convert miles per hour to kilometres per hour
Because one mile equals exactly 1.609344 km, a speed of 1 mile per hour is exactly 1.609344 kilometres per hour.
Conversion formula
km/h = mph × 1.609344
Reverse: mph = km/h ÷ 1.609344
For example, 1 mph = 1.61 km/h.
MPH to KM/H conversion chart
Use these common reference values or the interactive calculator above for any number.
| Miles per hour (mph) | Kilometres per hour (km/h) |
|---|---|
| 1 mph | 1.61 km/h |
| 10 mph | 16.09 km/h |
| 20 mph | 32.19 km/h |
| 30 mph | 48.28 km/h |
| 40 mph | 64.37 km/h |
| 50 mph | 80.47 km/h |
| 60 mph | 96.56 km/h |
| 70 mph | 112.65 km/h |
When is this conversion useful?
Speed limits and dashboards use different units across countries. This tool is useful when comparing published road speeds or exercise pace.
For driving, always follow the speed limit displayed locally. Rounded conversions are for understanding equivalent speeds, not replacing road signs.
Frequently asked questions
How fast is 60 mph in km/h?
60 mph is approximately 96.56 km/h.
Is 100 km/h equal to 60 mph?
Not exactly. 100 km/h is approximately 62.14 mph.