Ounces to kilograms – convert oz to kg
Convert ounces to kilograms (oz to kg) for shipping, recipes and product weights. This page opens the main mass converter with oz → kg pre-selected.
Quick reference: ounces to kilograms
The exact factor is 1 oz = 0.028349523125 kg.
| Ounces (oz) | Kilograms (kg, approx.) |
|---|---|
| 4 oz | 0.113 kg |
| 8 oz | 0.227 kg |
| 16 oz (1 lb) | 0.454 kg |
| 32 oz | 0.907 kg |
| 64 oz | 1.814 kg |
Why convert ounces to kilograms?
- Filling in customs or shipping forms that only accept kilograms.
- Comparing US packaging weights to metric-only product specs.
- Logging recipe quantities in a cookbook that uses kilograms.
- Working with science or engineering data where SI units are required.
Metric vs imperial mass
Ounces fit nicely for small everyday quantities in the imperial system, while kilograms are the SI base unit for mass. This converter keeps both sides consistent via an exact conversion factor.
Ounces to kilograms FAQ
- Is this the same ounce used on food labels?
- Yes. It uses the standard avoirdupois ounce, not fluid ounces (which are for volume, not mass).
- How many kilograms is 1 pound?
- 1 lb = 16 oz = 0.45359237 kg. You can switch to lb → kg on the homepage if that’s easier.
- Can I convert to grams instead?
- Absolutely. On the homepage choose oz → g or g → oz from the mass dropdown.