MPH to KPH converter
Type a speed in miles per hour (mph) or kilometers per hour (km/h) and see the other value instantly. Exact factor: 1 mph = 1.609344 km/h.
Converter tool
Formula: km/h = mph × 1.609344
Quick examples
| MPH | KM/H |
|---|---|
| 5 | 8.05 |
| 10 | 16.09 |
| 20 | 32.19 |
| 30 | 48.28 |
| 40 | 64.37 |
| 50 | 80.47 |
| 60 | 96.56 |
| 70 | 112.65 |
| 80 | 128.75 |
| 100 | 160.93 |
How to convert mph to km/h
Formula: km/h = mph × 1.609344. The factor is exact because 1 mile = 1609.344 meters and 1 hour = 3600 seconds.
Reverse conversion: to get mph from km/h, divide by 1.609344 (mph = km/h ÷ 1.609344).
Rule of thumb: for a mental estimate multiply mph by 1.6. Example: 70 mph × 1.6 ≈ 112 km/h (exact is 112.65 km/h).
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MPH → KPH FAQs
What is the exact conversion from mph to km/h?
Exactly 1 mph = 1.609344 km/h. Multiply mph by 1.609344 to get km/h.
How do I convert 60 mph to km/h?
60 × 1.609344 = 96.56 km/h.
How do I go back from km/h to mph?
Divide by 1.609344. Example: 100 km/h ÷ 1.609344 ≈ 62.14 mph.
Is the 1.609 factor accurate enough?
Use 1.609344 for exact results. Rounding to 1.609 is fine for rough estimates.