All tools / Unit Converter20 mph to kmh20 mph = 32.18688 kmhFormula1 mph = 1.609344 kmh, so 20 × 1.609344 = 32.18688Need another value? Use the full Unit ConverterOther mph → kmh conversions1 mph → kmh2 mph → kmh3 mph → kmh5 mph → kmh10 mph → kmh15 mph → kmhReverse conversion20 kmh → mphRelated conversions1 kmh → mph1 mps → kmh1 knots → kmh