Miles to Kilometers Converter

Use this converter to easily convert miles per hour to kilometers per hour (mph to km/h).

Result will be displayed here

Formula: 1 mph = 1.60934 km/h

Eighty miles per hour is approximately one hundred twenty-eight point seven kilometers per hour.

Convert 80 Miles per Hour to Kilometers per Hour

80 × 1.60934 = 128.7472 → rounded to 128.7 → “one hundred twenty-eight point seven”.