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UNIT.CONVERSION

Ounce to Kilogram

Convert ounce (oz) to kilogram (kg) with a live calculator, reference table and formula.

Category
weight
From
oz
To
kg
Factor
0.028349523
// INPUT01

Ounce

// OUTPUT02
0.028349523

Kilogram

Factor0.028349523
Inverse35.273962
Formulakg = oz × 0.028349523
Updated2026-05-25

TRY AMOUNTS

oz → kg
oz → kg2 oz5 oz10 oz25 oz50 oz100 oz500 oz1000 oz

Ounce to Kilogram Conversion Table

Common ounce to kilogram values for quick reference.

OunceKilogram
10.028349523
20.056699046
50.141747616
100.283495231
250.708738078
501.417476
1002.834952
2507.087381
50014.174762
100028.349523

When you'd actually use this

Where you'd actually use ounce → kilogram in everyday Australian life.

  • Cooking from overseas recipes

    American and British cookbooks rarely use the same weight units as Australian ones.

  • Online shopping

    Product specs from US stores often list weight in imperial units.

  • Travel and fitness apps

    Apps that default to a different region may show weight you need to translate.

Conversion Formula

To convert Ounce to Kilogram, multiply the ounce value by 0.028349523. This factor represents how many kilogram are equivalent to one ounce.

Formula

Kilogram = Ounce × 0.028349523

Inverse (converting back)

Ounce = Kilogram × 35.273962

How to Convert Ounce to Kilogram

Convert ounce to kilogram in three steps. The relationship is a single multiplication, so once you know the factor you can do it in your head for round numbers.

  1. Start with your value

    Take the number of ounce you want to convert.

  2. Multiply by the factor

    Multiply the value by 0.02835.

  3. Read your answer

    The result is the equivalent in kilogram.

Worked example

10 ounce = 0.283495231 kilogram

10 × 0.02835 = 0.283495231 kilogram.

What is a Ounce?

An ounce (avoirdupois) is approximately 28.35 grams, commonly used in American recipes and product specs.

Origin

Inherited from the British imperial system; standardised internationally in 1959.

Notable uses

  • American recipes
  • Boxing weight classes
  • Precious metals (troy ounce — different unit)

What is a Kilogram?

A kilogram is the SI base unit of mass, used throughout Australia for body weight, food and bulk measures.

Origin

Originally defined by the International Prototype of the Kilogram; since 2019 defined via Planck's constant.

Notable uses

  • Body weight
  • Grocery shopping
  • Sports and fitness

Frequently Asked Questions