The conversion factor from ounces to kilograms is 0.0283495231. For troy ounce, it is 0.0311034768. To find out how many kilograms in ounces, simply multiply by the conversion factor or use the converter.
1 Ounce = 0.0283495231 Kilogram
Ounce is an imperial and US customary mass (weight) unit. The commonly used ounces are the international avoirdupois and the troy ounce. Troy weight is used for the measurement of precious metals, gold, silver etc. The abbreviation is "oz".
Kilogram is a base unit of mass in metric system and equals to the mass of one liter of water. It equals to 2.20462262 pounds in imperial and US customary system. The abbreviation is "kg".