Density and Mass
oztokg
Convert ounces (avoirdupois) (oz) to kilograms (kg).
Factor1 oz = 0.02834952 kg
Converter
oz
Accepts numbers or expressions, e.g. 150 + 14.7
Result
kg
Rendered to 6 significant figures.
Formula
Formula
kg = oz × 0.02834952
Multiply any value in ounces (avoirdupois) by 0.02834952 to obtain the value in kilograms.
Worked example
Convert 100 oz to kg.
- 01Start with 100 oz.
- 02Multiply by the conversion factor: 100 × 0.02834952 = 2.83495 kg.
Result100 oz = 2.83495 kg
Conversion table
| oz | kg |
|---|---|
| 1 | 0.02835 |
| 2 | 0.056699 |
| 5 | 0.14175 |
| 10 | 0.2835 |
| 20 | 0.56699 |
| 50 | 1.4175 |
| 100 | 2.835 |
| 200 | 5.6699 |
| 500 | 14.175 |
| 1000 | 28.35 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from oz to kg?
1 oz equals 0.02834952 kg. To convert, multiply the value in ounces (avoirdupois) by 0.02834952.
How do I convert 1 oz to kg?
1 oz = 0.0283495 kg. For any value, multiply by 0.02834952.
How do I convert kg back to oz?
Divide by the same factor — or equivalently, multiply by 35.27396. So 1 kg = 35.274 oz.
When would I need to convert ounce (avoirdupois) to kilogram?
Mass conversions appear in material balances, reagent dosing, and reconciling vendor specifications across imperial/metric systems.
Is the conversion exact?
Yes. Both oz and kg are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).