Ounce to Kilogram

Convert ounce to kilogram instantly. Type in either field — results update live.

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Weight & Mass Ounce Kilogram

1 ounce = 0.0283495231 kilograms

From

Format

Selected oz values converted to kg using the exact factor from this tool.

Exact conversion factors in both directions, plus a worked example.

1 oz = 0.0283495231 kg

1 kg = 35.2739619496 oz

To convert ounce to kilogram, multiply by 0.0283495231.

To convert kilogram to ounce, multiply by 35.2739619496.

Example: convert 15 oz to kg

15 × 0.0283495231 = 0.4252428469 kg

Short background on the units used in this conversion.

An avoirdupois ounce is one sixteenth of a pound, or exactly 28.349523125 grams.

Ounces measure packaged food, postal rates, and recipe amounts in US customary cooking.

The kilogram is the SI base unit of mass, defined by fixing the numerical value of the Planck constant.

Kilograms are used worldwide for body weight, food packaging, shipping labels, and science wherever the metric system is standard.

How many kilograms are in one ounce?

One ounce equals 0.0283495231 kilograms. Multiply your ounces value by 0.0283495231 to convert to kilograms.

What is the conversion formula?

kg = oz × 0.0283495231

The reverse is oz = kg × 35.2739619496, using the same exact factors as this converter.

Is this Ounce to Kilogram converter private?

Yes. All calculations run locally in your browser. Nothing you type is sent to a server.

Jump to any weight & mass conversion starting from ounce — including the reverse direction and every other unit in our dataset.