All tools / Unit Converter40 knots to kmh40 knots = 74.08 kmhFormula1 knots = 1.852 kmh, so 40 × 1.852 = 74.08Need another value? Use the full Unit ConverterOther knots → kmh conversions1 knots → kmh2 knots → kmh3 knots → kmh4 knots → kmh5 knots → kmh6 knots → kmhRelated conversions1 kmh → mph1 mph → kmh1 mps → kmh1 mph → mps1 knots → mph