All tools / Unit Converter300 miles to km300 miles = 482.8032 kmFormula1 miles = 1.609344 km, so 300 × 1.609344 = 482.8032Need another value? Use the full Unit ConverterOther miles → km conversions1 miles → km2 miles → km3 miles → km4 miles → km5 miles → km6 miles → kmReverse conversion300 km → milesRelated conversions1 km → miles1 cm → inches1 inches → cm1 cm → feet1 feet → cm1 meters → feet