KM/H to MPH Converter
Convert kilometres per hour to miles per hour and back in either direction. Type a value into either field below and the other updates instantly. 1 km/h = 0.6213711922 mph.
One kilometre per hour equals 0.6213711922 miles per hour. To convert km/h to mph, multiply by 0.6213711922. To convert mph to km/h, multiply by 1.609344.
How to convert km/h to mph
KM/H to MPH conversion table
Frequently asked questions
How many mph is 1 km/h?
One kilometre per hour equals 0.6213711922 miles per hour. This is the reciprocal of 1 mph = 1.609344 km/h.
How do I convert km/h to mph?
Multiply the speed in km/h by 0.6213711922 (or divide by 1.609344). For example, 100 km/h × 0.6213711922 = 62.14 mph. The calculator above does this instantly in both directions.
How do I convert mph back to km/h?
Multiply the speed in mph by 1.609344. For example, 60 mph × 1.609344 = 96.56 km/h. Type a value into the mph field above and the km/h field updates automatically.
What is 120 km/h in mph?
120 km/h equals 74.56 mph (120 × 0.6213711922 = 74.5645). This is a common motorway speed limit in mainland Europe.
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