Ounces to Kilograms Converter
Convert ounces to kilograms instantly with this free ounces to kilograms converter. Enter any value to get an accurate weight & mass conversion, plus the formula, the conversion factor and a full reference table.
What is 1 ounce in kilograms?
1 ounce is equal to 0.028349523 kilograms.
1 ÷ 35.2739619 = 0.028349523 kilograms
1 ounce = 0.0283495231 kilograms
Ounces to Kilograms formula
kg = oz ÷ 35.2739619
The ounces to kilograms conversion factor is 0.028349523125, which is exact by definition. 1 ounce = 0.028349523125 kilograms, and 1 kilogram = 35.2739619496 ounces.
Worked examples
- 2 ounces = 0.056699046 kilograms — 2 ÷ 35.2739619 = 0.056699046 kilograms
- 6 ounces = 0.170097139 kilograms — 6 ÷ 35.2739619 = 0.170097139 kilograms
- 10 ounces = 0.283495231 kilograms — 10 ÷ 35.2739619 = 0.283495231 kilograms
Ounces to Kilograms conversion table
Every value below is calculated with the exact conversion factor and rounded for display.
| Ounces (oz) | Kilograms (kg) |
|---|---|
| 1 oz | 0.02834952 kg |
| 2 oz | 0.05669905 kg |
| 3 oz | 0.08504857 kg |
| 4 oz | 0.11339809 kg |
| 5 oz | 0.14174762 kg |
| 6 oz | 0.17009714 kg |
| 7 oz | 0.19844666 kg |
| 8 oz | 0.22679619 kg |
| 9 oz | 0.25514571 kg |
| 10 oz | 0.28349523 kg |
| 12 oz | 0.34019428 kg |
| 15 oz | 0.42524285 kg |
| 20 oz | 0.56699046 kg |
| 25 oz | 0.70873808 kg |
| 30 oz | 0.85048569 kg |
| 50 oz | 1.4174762 kg |
| 75 oz | 2.1262142 kg |
| 100 oz | 2.8349523 kg |
| 500 oz | 14.174762 kg |
| 1,000 oz | 28.349523 kg |
When you need to convert ounces to kilograms
- Cooking from recipes that give ingredients by weight in a different system.
- Checking airline baggage allowances, which are quoted in kilograms almost everywhere except the US.
- Recording body weight, gym plate loads or shipping weights across regions.
Getting a feel for the scale
A converted number is easier to trust when you can picture it. These reference points let you sanity-check the result at a glance.
Ounce (oz)
- A slice of bread is about 1 oz
- A tennis ball is roughly 2 oz
Kilogram (kg)
- A litre of water weighs 1 kg
- A bag of flour is usually 1 or 1.5 kg
Common mistakes to avoid
- Dividing when you should multiply. Because 1 ounce = 0.02835 kilograms, the answer should be smaller than the number you started with.
- Confusing the fluid ounce (a volume) with the ounce (a weight). They are different quantities and only coincide for water by rough approximation.
- Rounding too early. Convert first at full precision, then round the final answer to the precision the task actually needs.
How precise does the answer need to be?
Kitchen scales resolve to about 1 g or 0.1 oz, so two significant figures beyond the decimal point is wasted precision. Postage and freight are normally rounded up to the next billing increment.
How these units are defined
- Ounce (oz): The avoirdupois ounce: one sixteenth of a pound. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
- Kilogram (kg): The SI base unit of mass, defined via the Planck constant. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
Related conversions
Frequently asked questions
- What is 1 ounce in kilograms?
- 1 ounce is equal to 0.028349523 kilograms.
- How many ounces are in one kilogram?
- There are 35.2739619 ounces in 1 kilogram.
- How do you convert ounces to kilograms?
- Multiply the number of ounces by 0.028349523 — or use the formula kg = oz ÷ 35.2739619.
- What is 6 ounces in kilograms?
- 6 ounces is 0.170097139 kilograms. 6 ÷ 35.2739619 = 0.170097139 kilograms.
- Is the ounces to kilograms conversion exact?
- Yes. The relationship is fixed by definition, so 0.028349523125 is an exact conversion factor — only the displayed result is rounded.