All tools / Unit Converter20 kmh to mph20 kmh = 12.427424 mphFormula1 kmh = 0.621371 mph, so 20 × 0.621371 = 12.427424Need another value? Use the full Unit ConverterOther kmh → mph conversions1 kmh → mph2 kmh → mph3 kmh → mph5 kmh → mph10 kmh → mph15 kmh → mphReverse conversion20 mph → kmhRelated conversions1 mph → kmh1 mps → kmh1 knots → kmh