All tools / Unit Converter9 stone to kg9 stone = 57.152639 kgFormula1 stone = 6.350293 kg, so 9 × 6.350293 = 57.152639Need another value? Use the full Unit ConverterOther stone → kg conversions1 stone → kg2 stone → kg3 stone → kg4 stone → kg5 stone → kg6 stone → kgReverse conversion1 kg → stoneRelated conversions1 kg → pounds1 pounds → kg1 grams → ounces1 ounces → grams1 kg → grams1 tonnes → kg