Ounces to Kilograms Converter
Enter the weight in ounces below to convert it to kilograms.
Convert Ounces to Kilograms
Enter a value in ounces (oz) to convert to kilograms (kg).
Ounce to Kilogram Conversion Table
Table showing various ounce measurements converted to kilograms. Click any preset value or arrow to load it into the converter.
| Ounces (oz) | Kilograms (kg) |
|---|---|
| 1 oz | 0.0283495 kg |
| 2 oz | 0.056699 kg |
| 5 oz | 0.1417476 kg |
| 8 oz | 0.2267962 kg |
| 10 oz | 0.2834952 kg |
| 15 oz | 0.4252428 kg |
| 16 oz | 0.4535924 kg |
| 20 oz | 0.5669905 kg |
| 25 oz | 0.7087381 kg |
| 30 oz | 0.8504857 kg |
How to Convert Ounces to Kilograms
To convert ounces to kilograms, multiply the weight by the following conversion ratio: 0.0283495 kilograms/ounce.
Since one ounce is equal to 0.0283495 kilograms, you can use this simple formula to convert:
The weight in kilograms is equal to the weight in ounces multiplied by 0.0283495.
For example, here's how to convert 16 ounces to kilograms using the formula above.
How Many Kilograms Are in an Ounce?
There are 0.0283495 kilograms in an ounce, which is why we use this value in the formula above.
Our ounce to kilogram calculator automatically converts your weight measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Ounces and kilograms are both units used to measure weight. Keep reading to learn more about each unit.
What Is an Ounce?
An ounce is a unit of weight equal to 0.0283495 kilograms (kg), the base unit for weight. Equal to 1/16 of a pound (approx. 28.3495 grams). [1]
The ounce is classified as a US customary and imperial unit of weight. Ounces can be abbreviated as oz; for example, 1 ounce can be written as 1 oz.
When working with ounces (oz) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, ounces (oz) are widely used across standard weight applications within US customary and imperial workflows, engineering documentation, and technical data sheets.
What Is a Kilogram?
The fundamental SI unit of mass. It serves as a primary reference unit for measuring weight across scientific and practical applications. [2]
The kilogram is classified as an International System of Units (SI) unit of weight. Kilograms can be abbreviated as kg; for example, 1 kilogram can be written as 1 kg.
Although the name "kilogram" begins with the SI prefix "kilo" (1,000 grams), the kilogram (kg) is the sole SI base unit whose definition includes a prefix for historical reasons established by the BIPM.
In practice, kilograms (kg) are widely used across standard weight applications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
When converting weight between ounces (oz) and kilograms (kg), keep full floating-point precision (1 oz = 0.0283495 kg; 1 kg = 35.2739619 oz) during intermediate calculations and round only the final kilogram figure to match your instrument tolerance.
More Ounce & Kilogram Conversions
Need to calculate in the opposite direction? Use our kilograms to ounces converter (kg to oz) to switch your starting unit immediately. You can also explore related tools such as converting pounds to kilograms, converting grams to kilograms, or converting ounces to grams.
Convert from Ounces
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Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Mass)·Mass & Weight Metrology Standard — Ounces (oz) to Kilograms (kg)
- [2]NIST HB 44 SpecificationNIST HB 44 (NIST Handbook 44 (Current Ed.))·Unit Specifications: Ounce (oz) & Kilogram (kg)
- [3]BIPM ReferenceBIPM (SI Base Unit: Kilogram (kg))·Conversion Factors & Mathematical Basis (oz to kg)