All tools / Unit Converter3 kmh to mph3 kmh = 1.864114 mphFormula1 kmh = 0.621371 mph, so 3 × 0.621371 = 1.864114Need another value? Use the full Unit ConverterOther kmh → mph conversions1 kmh → mph2 kmh → mph5 kmh → mph10 kmh → mph15 kmh → mph20 kmh → mphReverse conversion3 mph → kmhRelated conversions1 mph → kmh1 mps → kmh1 knots → kmh