ToolNestKilometers per Hour to Miles per Hour Converter
Convert kilometers per hour to miles per hour instantly with our free speed converter. 1 kilometer per hour = 0.621371 mph — type any value below and the result updates live.
Kilometers per Hour → Miles per Hour⇄ Swap: Miles per Hour → Kilometers per Hour
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Kilometers per Hour to Miles per Hour Formula
Miles per Hour = Kilometers per Hour × 0.621371 (Kilometers per Hour = Miles per Hour × 1.609344)
Speed conversion for driving, aviation, and sports — miles per hour (US roads), kilometers per hour (metric roads), meters per second (science), knots (aviation and marine), and feet per second.
Kilometers per Hour to Miles per Hour Conversion Table
| Kilometers per Hour | Miles per Hour | |
|---|---|---|
| 1 km/h | = | 0.621371 mph |
| 2 km/h | = | 1.242742 mph |
| 5 km/h | = | 3.106856 mph |
| 10 km/h | = | 6.213712 mph |
| 25 km/h | = | 15.53428 mph |
| 50 km/h | = | 31.06856 mph |
| 100 km/h | = | 62.137119 mph |
About Kilometers per Hour and Miles per Hour
Kilometers per hour is the metric standard for road speeds worldwide — 100 km/h is about 62 mph.
Miles per hour is the US standard for road speed limits and vehicle speeds — 60 mph is about 97 km/h.
Frequently Asked Questions
How many miles per hour are in one kilometer per hour?
One kilometer per hour equals 0.621371 miles per hour. Multiply any kilometers per hour value by 0.621371 to convert it.
What is the formula for converting kilometers per hour to miles per hour?
Miles per Hour = Kilometers per Hour × 0.621371. To reverse it: kilometers per hour = miles per hour × 1.609344.
How do I convert miles per hour back to kilometers per hour?
Divide the miles per hour value by 0.621371 (equivalently, multiply by 1.609344). Or use our miles per hour-to-kilometers per hour converter going the other way.
Which is bigger, a kilometer per hour or a mile per hour?
A mile per hour is bigger — it takes 1.609344 kilometers per hour to make one mile per hour.