Ounce (oz)
The ounce is used for small masses, food, precious metals, and English-language recipes.
History: the ounce goes back to the Roman uncia, one twelfth; in the avoirdupois system it became 1/16 of a pound.
Quickly convert ounces to kilograms without lookup tables or manual math.
This page is focused on converting ounces to kilograms. Type a number into the first field and the result appears immediately in the second field.
Example: 1 oz = 0.0283495231 kg. Conversion formula: result = value × 0.028349523125 / 1.
Use this converter for everyday calculations, study notes, engineering checks, and quick value verification without installing a separate app.
The ounce is used for small masses, food, precious metals, and English-language recipes.
History: the ounce goes back to the Roman uncia, one twelfth; in the avoirdupois system it became 1/16 of a pound.
The kilogram is the SI base unit of mass and the main mass measure in everyday life, trade, and science.
History: since 2019, the kilogram has been defined through the Planck constant rather than a physical artifact.
Enter a value in the Ounce field. The converter applies the formula "result = value × 0.028349523125 / 1" and immediately shows the result in kilograms.
1 oz = 0.0283495231 kg.
Yes. Use the swap button or choose the reverse pair from the full conversion list.