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Convert ounces to kilograms
Instant, accurate oz → kg conversion with a live converter, table and formula.
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1 ounce = 0.0283495 kilograms
1 kilogram = 35.274 ounces
ounces to kilograms table
| ounces (oz) | kilograms (kg) |
|---|---|
| 0.5 | 0.0141748 |
| 1 | 0.0283495 |
| 2 | 0.056699 |
| 5 | 0.141748 |
| 10 | 0.283495 |
| 20 | 0.56699 |
| 50 | 1.41748 |
| 100 | 2.83495 |
| 500 | 14.1748 |
| 1000 | 28.3495 |
Formula
kilograms = ounces × 0.0283495.
Example
10 ounces = 0.283495 kilograms.
What is a ounce?
An ounce (oz) is 1/16 of a pound (28.35 g), used for food and mail.
What is a kilogram?
The kilogram (kg) is the SI base unit of mass; one liter of water weighs about 1 kg.
Real-world reference points
A kilogram is a liter of water; a pound is a loaf of bread; an ounce is a slice of it.
| Reference | ounces | kilograms |
|---|---|---|
| Smartphone | 6.35 oz | 0.18 kg |
| Liter of water | 35.27 oz | 1 kg |
| Newborn baby (average) | 116 oz | 3.3 kg |
| Airline checked-bag limit (common) | 811 oz | 23 kg |
| Cement bag (standard) | 1,764 oz | 50 kg |
Mistakes to avoid with mass conversions
- Confusing weight ounces with fluid ounces — one measures mass, the other volume.
- Reading 'stone and pounds' (11 st 6 lb) as decimal stone (11.6 st) — they differ.
- Comparing net vs gross weight when shipping: the box and padding count toward limits.
Frequently asked questions
How many kilograms in a ounces?+
1 ounce = 0.0283495 kilograms.
How do I convert ounces to kilograms?+
Enter the value in the ounces box above and the kilograms value appears instantly. You can also type in the kilograms box to convert the other way.
Is this oz to kg converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.