Ounces to Kilograms converter (oz to kg)
Convert Ounces (oz) to Kilograms (kg) with this free calculator. Type a value, press Convert, and the page applies the same factor shown in the formula below — no rounded shortcut, and nothing is stored on a server.
How to convert Ounces to Kilograms
1 ounce (oz) is equal to 0.0283495231 kilograms (kg).
1 oz = 0.0283495231 kg
The mass m in kilograms (kg) is equal to the mass m in ounces (oz) multiplied by 0.0283495231:
Example: Convert 5 oz to kilograms:
m(kg) = 5 oz × 0.0283495231 = 0.142 kg
What is a Ounces?
The ounce (oz) is 1÷16 of a pound. Recipes, postage, and small package weights often use ounces.
What is a Kilograms?
The kilogram (kg) is the SI base unit of mass. It is the standard used in science and in most countries for body weight, food, and shipping.
This page converts mass from Ounces into Kilograms. One oz equals 0.028349523 kg.
Ounces to Kilograms conversion table
Common oz values and the matching kg result, calculated with the same factor as the widget. Highlight a nearby row if you want a quick check without entering a number.
| Ounces (oz) | Kilograms (kg) |
|---|---|
| 0 oz | 0 kg |
| 0.1 oz | 0.002834952 kg |
| 1 oz | 0.028349523 kg |
| 2 oz | 0.056699046 kg |
| 3 oz | 0.085048569 kg |
| 4 oz | 0.113398092 kg |
| 5 oz | 0.141747616 kg |
| 6 oz | 0.170097139 kg |
| 7 oz | 0.198446662 kg |
| 8 oz | 0.226796185 kg |
| 9 oz | 0.255145708 kg |
| 10 oz | 0.283495231 kg |
| 20 oz | 0.566990462 kg |
| 30 oz | 0.850485693 kg |
| 40 oz | 1.133980924 kg |
| 50 oz | 1.417476155 kg |
| 60 oz | 1.700971386 kg |
| 70 oz | 1.984466617 kg |
| 80 oz | 2.267961848 kg |
| 90 oz | 2.551457079 kg |
| 100 oz | 2.83495231 kg |
| 1000 oz | 28.3495231 kg |
How this calculator works
The form on this page is a Ounces-to-Kilograms converter. After you enter a number, JavaScript multiplies or rearranges it with the published conversion factor and writes the kg result in the output box. The step-by-step panel repeats the arithmetic so you can copy it into homework or a spreadsheet.
Reviewed by Hamsen, founder of GigaTables and a biology engineer. See the about page for how formulas are checked before a tool is published.
FAQ
How many kg are in 1 oz?
1 oz = 0.028349523 kg.
How do I convert Ounces to Kilograms?
The mass m in kilograms (kg) is equal to the mass m in ounces (oz) multiplied by 0.0283495231:
Is this oz to kg converter free?
Yes. GigaTables calculators are free to use in a browser. You do not need an account, and the values you type are not uploaded.