How to Calculate and Convert Mph to Kph: Easiest Ways
1 Mile per hour (mph) is equal to 1.609344 kilometers per hour (kph). To convert miles per hour to kilometers per hour, multiply the miles per hour value by 1.609344. For example, to convert 50 mph to kph, multiply 50 by 1.609344, that makes 80.4672 kph is 50 mph.
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