Kilograms to Ounces Converter

About the kg to oz calculation

One kilogram is exactly 35.274 ounces, so converting between them is a single multiplication. Enter any value above and the result updates as you type. The SI base unit of mass, and how bodyweight is quoted in most of the world. Common in US recipes and for postal weights. Not the same as a fluid ounce.

Formula

oz = kg × 35.274

1 kg = 35.274 oz
1 oz = 0.02835 kg

Worked example

To convert 70 kg, multiply by 35.274: 70 × 35.274 = 2,469.18 oz.

Frequently asked questions

How many ounces are in a kilogram?

There are 35.274 ounces in one kilogram. To convert any amount, multiply the number of kilograms by 35.274.

How do I convert ounces back to kilograms?

Divide instead of multiplying, or equivalently multiply by 0.02835. One ounce is 0.02835 kilograms.

Is this conversion exact?

Yes. Since the international agreement of 1959, the relationship between kilograms and ounces is defined exactly rather than measured, so the only rounding here is in how many decimal places we show.

Where is each of these units used?

Kilograms: the SI base unit of mass, and how bodyweight is quoted in most of the world. Ounces: common in US recipes and for postal weights. Not the same as a fluid ounce.

Sources

• NIST Special Publication 811 — Guide for the Use of the International System of Units