What is 4.90 kilograms into stones, pounds and ounces. Convert 4.90 kilograms to stones, pounds and ounces? Conversions are shown in all common units of mass and to 10 decimal place accuracy. Unit converter Carats Drams (drachm) Grains Grams Kilograms Pounds and ounces Pounds Ounces Metric tonnes Imperial tons Using the menu above, select the unit of weight that you want to convert FROM and enter the amount. The resulting conversion will be show in all common weight measures.