mph to kmh
Unit Converters

mph to kmh

Convert miles per hour to kilometers per hour (or km/h to mph) instantly. Type a value in either field and the other updates live; use the swap button to flip the direction.

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How It Works

One mile is 1.609344 kilometers, so to convert miles per hour to kilometers per hour you multiply by 1.609344. To go the other way, divide km/h by 1.609344.

Frequently Asked Questions

How many km/h is one mph?
One mile per hour is 1.609344 kilometers per hour, since one mile is exactly 1.609344 kilometers. Multiply mph by 1.609344 to get km/h.
Is this the same conversion as miles to kilometers?
Yes. Since speed is distance over time, converting mph to km/h uses the same 1.609344 factor as converting miles to kilometers.
How fast is 60 mph in km/h?
60 mph is approximately 96.56 km/h (60 × 1.609344). This is a common highway speed limit in the United States, equivalent to just under 100 km/h in countries using the metric system.

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