Convert Ounce to Kilogram

One oz equals 0.02834952313 kg. This converter allows you to easily convert between Ounce and Kilogram in real time.

Formula

oz × 0.02834952313 = kg

Example: 1 oz = 0.02834952313 kg

What is Ounce?

The ounce is a unit of mass in the imperial and US customary systems, equal to one-sixteenth of a pound, or exactly 28.349523125 grams. It is widely used in the United States for food packaging, postal rates, and portion sizes. Boxing gloves are rated in ounces (such as 8 oz or 10 oz), and restaurant menus often describe steak sizes in ounces. Note that the fluid ounce is a separate unit of volume and should not be confused with the ounce of mass.

What is Kilogram?

The kilogram is the base unit of mass in the International System of Units (SI). Originally defined by a physical platinum-iridium prototype created in 1889, it was redefined in 2019 using the Planck constant for greater precision. It is used worldwide in everyday life, from grocery shopping to scientific research. When you step on a bathroom scale or check a food label, the measurement is typically in kilograms.