All tools / Unit Converter40 inches to cm40 inches = 101.6 cmFormula1 inches = 2.54 cm, so 40 × 2.54 = 101.6Need another value? Use the full Unit ConverterOther inches → cm conversions1 inches → cm2 inches → cm3 inches → cm4 inches → cm5 inches → cm6 inches → cmReverse conversion40 cm → inchesRelated conversions1 km → miles1 miles → km1 cm → inches1 cm → feet1 feet → cm1 meters → feet