All tools / Unit Converter40 pounds to ounces40 pounds = 640 ouncesFormula1 pounds = 16 ounces, so 40 × 16 = 640Need another value? Use the full Unit ConverterOther pounds → ounces conversions1 pounds → ounces2 pounds → ounces3 pounds → ounces4 pounds → ounces5 pounds → ounces6 pounds → ouncesReverse conversion40 ounces → poundsRelated conversions1 kg → pounds1 pounds → kg1 grams → ounces1 ounces → grams1 kg → grams1 tonnes → kg