UTILLAB
Home
About
Β© Copyright 2026Β UtilLab
About usPrivacy Policy

Ounce [oz] to Kilogram [kg] Converter

Quick Reference

1 Ounce (oz) = 0.0283495 Kilogram (kg)

1 Kilogram (kg) = 35.27399072 Ounce (oz)

How to Convert Ounce to Kilogram

1 oz = 0.0283495 kg
1 kg = 35.27399072294044 oz

To convert Ounce to Kilogram, divide the value by 35.27399072 (equivalently, multiply by 0.0283495). To convert Kilogram back to Ounce, multiply by 35.27399072.

Example: convert 10 oz to kg:
10 oz = 10 x 0.0283495 = 0.283495 kg

↔ Convert Kilogram to Ounce

Ounce

Definition: An ounce (symbol: oz) is a unit of mass in the imperial and US customary systems of measurement. There are different types of ounces, but the most common is the avoirdupois ounce, which is equal to approximately 28.35 grams.

History/origin: The ounce has ancient origins and has been used in various forms for centuries. The avoirdupois ounce became standardized in England and was adopted by the US customary system.

Current use: Ounces are used for measuring the mass of food items, precious metals, and other commodities in countries that use the imperial or US customary systems.

Kilogram

Definition: A kilogram (symbol: kg) is the base unit of mass in the International System of Units (SI). It is equal to 1000 grams.

History/origin: The kilogram was originally defined as the mass of a specific artifact called the International Prototype Kilogram (IPK), a platinum-iridium cylinder. In 2019, the definition was redefined based on fundamental physical constants.

Current use: Kilograms are used for measuring the mass of larger objects, such as people, packages, and vehicles. It's a standard unit in commerce, engineering, and science.

Ounce to Kilogram Conversion Table

Ounce [oz]Kilogram [kg]
1 oz0.0283495 kg
2 oz0.056699 kg
5 oz0.1417475 kg
10 oz0.283495 kg
20 oz0.56699 kg
50 oz1.4174749999999998 kg
100 oz2.8349499999999996 kg
200 oz5.669899999999999 kg
500 oz14.17475 kg
1000 oz28.3495 kg

Common pairs of Mass

Microgram

Microgram to MilligramMicrogram to GramMicrogram to KilogramMicrogram to Metric TonneMicrogram to Ounce

Milligram

Milligram to MicrogramMilligram to GramMilligram to KilogramMilligram to Metric TonneMilligram to Ounce

Gram

Gram to MicrogramGram to MilligramGram to KilogramGram to Metric TonneGram to Ounce

Kilogram

Kilogram to MicrogramKilogram to MilligramKilogram to GramKilogram to Metric TonneKilogram to Ounce

Metric Tonne

Metric Tonne to MicrogramMetric Tonne to MilligramMetric Tonne to GramMetric Tonne to KilogramMetric Tonne to Ounce

Ounce

Ounce to MicrogramOunce to MilligramOunce to GramOunce to KilogramOunce to Metric Tonne

Pound

Pound to MicrogramPound to MilligramPound to GramPound to KilogramPound to Metric Tonne

Ton

Ton to MicrogramTon to MilligramTon to GramTon to KilogramTon to Metric Tonne

Ounce [oz] to Kilogram [kg] Converter

To convert Ounce to Kilogram, enter your value in the oz field above and the result in kg will appear instantly. You can also use the conversion factor shown in the table on this page to calculate manually. The formula is always the same: multiply your oz value by the fixed conversion ratio to get the equivalent in kg.
Our Ounce to Kilogram converter uses standardized conversion factors defined by international scientific and metrological organizations. All calculations are performed with full floating-point precision. You can also choose how many decimal places to display in the result, so you get exactly the level of detail you need.
Yes, absolutely. Simply swap the source and destination units in the converter β€” select kg as your input unit and oz as your output unit. The same precision and standardized conversion factor applies in both directions.
Converting between Ounce and Kilogram comes up regularly in engineering, scientific research, construction, and everyday tasks that involve measurements from different unit systems. Our converter eliminates the risk of manual calculation errors and saves time whenever you need to switch between these two units.
Yes, the Ounce to Kilogram converter is completely free. No account or registration is required, and there are no usage limits. It works on any device β€” smartphones, tablets, and desktop computers β€” directly in your browser.
Ounce and Kilogram are both units used to measure the same physical quantity, but they belong to different measurement systems or represent different scales. The mathematical relationship between them is fixed and constant, which is what makes accurate conversion possible. Scroll up to see the exact conversion factor, formula, and a reference table for common values.