MPH to KM/H Converter
Convert miles per hour to kilometers per hour (mph to km/h) instantly, with the formula and a conversion chart.
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How to convert miles per hour to kilometers per hour
1 mile per hour = 1.60934 kilometers per hour. To convert miles per hour to kilometers per hour, multiply by 1.60934.
Example: 70 mph = 112.65 km/h.
Quick estimate: Multiply by 1.6: 70 mph ≈ 112 km/h (exactly 112.65).
US and UK speed limits, wind speeds and treadmill displays use miles per hour.
MPH to KM/H conversion chart
| Miles per hour | Kilometers per hour |
|---|---|
| 10 mph | 16.093 km/h |
| 20 mph | 32.187 km/h |
| 25 mph | 40.234 km/h |
| 30 mph | 48.28 km/h |
| 40 mph | 64.374 km/h |
| 50 mph | 80.467 km/h |
| 55 mph | 88.514 km/h |
| 60 mph | 96.561 km/h |
| 65 mph | 104.61 km/h |
| 70 mph | 112.65 km/h |
| 80 mph | 128.75 km/h |
| 100 mph | 160.93 km/h |
How to use this tool
- 1Type the number of miles per hour in the Value box.
- 2The result in kilometers per hour appears instantly.
- 3Use the ⇄ button to convert kilometers per hour to miles per hour instead, or pick any other unit.
Features
- Exact mph to km/h conversion using the standard definition.
- Results update as you type, rounded to 6 decimal places.
- Switch to any other length, weight, temperature, volume or speed unit.
Privacy
Everything is calculated in your browser. Nothing is sent to a server.
Frequently asked questions
How fast is 70 mph in km/h?
112.65 km/h — the UK motorway limit.
How many km/h is 60 mph?
96.56 km/h.
How do I convert kilometers per hour back to miles per hour?
Divide by 1.60934 (or multiply by 0.621371), or use the swap button in the converter above or the KM/H to MPH converter.
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