All tools / Unit Converter40 ml to liters40 ml = 0.04 litersFormula1 ml = 0.001 liters, so 40 × 0.001 = 0.04Need another value? Use the full Unit ConverterOther ml → liters conversions1 ml → liters2 ml → liters3 ml → liters4 ml → liters5 ml → liters6 ml → litersReverse conversion40 liters → mlRelated conversions1 liters → gallons1 gallons → liters1 liters → ml1 gallons → ml1 m3 → liters