Convert Ounce to Kilogram
Use this free converter to change ounces (oz) into kilograms (kg). Ounce and kilogram both measure weight & mass. As a quick reference, 1 oz equals 0.028349523 kg, and 1 kg equals 35.273962 oz.
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Kilogram (kg)
0.028349523
1 oz = 0.028349523 kg
Weight & Mass conversion table
| Ounce | Kilogram |
|---|---|
| 0.01 | 0.00028349523 |
| 0.1 | 0.0028349523 |
| 0.5 | 0.014174762 |
| 1 | 0.028349523 |
| 2 | 0.056699046 |
| 3 | 0.085048569 |
| 5 | 0.14174762 |
| 10 | 0.28349523 |
| 20 | 0.56699046 |
| 25 | 0.70873808 |
| 50 | 1.4174762 |
| 100 | 2.8349523 |
| 1,000 | 28.349523 |
How to convert Ounce to Kilogram
Multiply the ounce value by 0.028349523 to get kilograms.
- Enter the number of ounces you want to convert.
- The converter instantly shows the equivalent value in kilograms.
- Worked example: 15 oz × 0.028349523 = 0.42524285 kg.
- Use the swap button to reverse the conversion (kilogram to ounce).
About these units
Ounce (oz)
- Definition
- An ounce (oz) is an imperial unit of mass equal to one sixteenth of a pound, about 28.35 grams.
- History
- It also descends from the Roman "uncia" (a twelfth) and was later fixed at 1/16 of the avoirdupois pound.
- Current use
- Ounces measure food portions, postal weights, and ingredients in the US and UK.
Kilogram (kg)
- Definition
- The kilogram (kg) is the SI base unit of mass, defined since 2019 by fixing the value of the Planck constant.
- History
- It was originally the mass of one liter of water, then a platinum-iridium cylinder kept near Paris until the 2019 redefinition.
- Current use
- The kilogram is the global standard for weighing goods, people, and ingredients in science and commerce.
Frequently asked questions
How many kilograms are in a ounce?
There are 0.028349523 kg in 1 oz. To convert, multiply the number of ounces by 0.028349523.
How do I convert ounces to kilograms?
Multiply the ounce value by 0.028349523 to get kilograms. For example, 10 oz = 0.28349523 kg.
Is this ounce-to-kilogram converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Ounce to other weight & mass units
| Unit | 1 Ounce equals |
|---|---|
| Kilogram (kg) | 0.028349523 kg |
| Gram (g) | 28.349523 g |
| Milligram (mg) | 28349.523 mg |
| Microgram (µg) | 28349523 µg |
| Metric Ton (t) | 0.000028349523 t |
| Pound (lb) | 0.0625 lb |
| Stone (st) | 0.0044642857 st |
| US Ton (ton) | 0.00003125 ton |
| Imperial Ton (long ton) | 0.000027901786 long ton |
| Carat (ct) | 141.74762 ct |