All tools / Unit Converter40 km to meters40 km = 40,000 metersFormula1 km = 1,000 meters, so 40 × 1,000 = 40,000Need another value? Use the full Unit ConverterOther km → meters conversions1 km → meters2 km → meters3 km → meters4 km → meters5 km → meters6 km → metersRelated conversions1 km → miles1 miles → km1 cm → inches1 inches → cm1 cm → feet1 feet → cm