Convert Ounce to Kilogram
Turn Ounces into Kilograms in an instant. Type a value below to get an accurate oz → kg result, with the formula and a quick-reference table.
1 oz = 0.028349523 kg
Quick answer: 1 Ounce = 0.028349523 Kilogram
Ounce to Kilogram conversion table
| Ounce (oz) | Kilogram (kg) |
|---|---|
| 1 oz | 0.028349523 kg |
| 2 oz | 0.056699046 kg |
| 5 oz | 0.14174762 kg |
| 10 oz | 0.28349523 kg |
| 20 oz | 0.56699046 kg |
| 50 oz | 1.4174762 kg |
| 100 oz | 2.8349523 kg |
| 500 oz | 14.174762 kg |
| 1,000 oz | 28.349523 kg |
How to convert Ounce to Kilogram
To convert Ounces to Kilograms, multiply the value by 0.028349523.
- Take your measurement in Ounces.
- Multiply it by 0.028349523 — the number of Kilograms in one Ounce.
- The result is the same amount, expressed in Kilograms.
To go the other way, multiply Kilograms by 35.273962 — or simply divide by 0.028349523.
For example, one pound is about 16 oz, which is 0.45359237 kg.
About Ounce and Kilogram
An ounce is an imperial unit of mass equal to about 28.35 grams, or one-sixteenth of a pound. It is common in the United States for food packaging, postage and cooking.
The kilogram is the SI base unit of mass, equal to 1,000 grams. It is the standard unit for body weight, groceries and most goods worldwide.
The Ounce is a imperial / US customary unit while the Kilogram comes from the metric system — which is exactly why this conversion comes up so often. One Ounce equals 0.028349523 Kilograms.
Other weight & mass conversions
Frequently asked questions
How many Kilograms are in a Ounce?
1 Ounce equals 0.028349523 Kilogram (oz → kg). To convert any amount, multiply the number of Ounces by 0.028349523.
How do I convert Ounce to Kilogram?
Enter the number of Ounces in the converter above and read the result in Kilograms. It applies the exact oz → kg factor instantly, with full precision.
Is the Ounce to Kilogram converter free?
Yes — it is completely free and unlimited, needs no sign-up, and runs right in your browser, so it is instant and private.
Is the conversion accurate?
Yes. It uses the internationally defined weight & mass factors and full floating-point precision, then rounds the display to a clean, readable number.