Convert Ounces to Kilograms
One ounce equals 0.0283495 kilograms. Type any value to convert ounces to kilograms instantly — with a full reference table below.
Convert Ounces to Kilograms
Converted in your browser — nothing you enter is sent anywhere.
How to convert Ounces to Kilograms
To convert ounces to kilograms, multiply by 0.0283495. One ounce equals 0.0283495 kg, and one kilogram equals 35.27396 oz.
- Take the value in ounces — for example 7.5 oz.
- Multiply by 0.0283495 (the number of kilograms in one ounce).
- 7.5 × 0.0283495 = 0.212621 kg.
Quick mental estimate: Divide the number of ounces by 35 (within 0.8% of the exact answer).
Ounces to Kilograms conversion table
| Ounces | Kilograms |
|---|---|
| 1 oz | 0.0283495 kg |
| 2 oz | 0.056699 kg |
| 3 oz | 0.0850486 kg |
| 4 oz | 0.113398 kg |
| 5 oz | 0.141748 kg |
| 6 oz | 0.170097 kg |
| 7 oz | 0.198447 kg |
| 8 oz | 0.226796 kg |
| 9 oz | 0.255146 kg |
| 10 oz | 0.283495 kg |
| 12 oz | 0.340194 kg |
| 15 oz | 0.425243 kg |
| 20 oz | 0.56699 kg |
| 25 oz | 0.708738 kg |
| 50 oz | 1.417476 kg |
| 100 oz | 2.834952 kg |
| Kilograms | Ounces |
|---|---|
| 1 kg | 35.27396 oz |
| 2 kg | 70.54792 oz |
| 3 kg | 105.8219 oz |
| 4 kg | 141.0958 oz |
| 5 kg | 176.3698 oz |
| 6 kg | 211.6438 oz |
| 7 kg | 246.9177 oz |
| 8 kg | 282.1917 oz |
| 9 kg | 317.4657 oz |
| 10 kg | 352.7396 oz |
| 12 kg | 423.2875 oz |
| 15 kg | 529.1094 oz |
| 20 kg | 705.4792 oz |
| 25 kg | 881.849 oz |
| 50 kg | 1,763.698 oz |
| 100 kg | 3,527.396 oz |
About converting Ounces to Kilograms
Ounces (oz) and Kilograms (kg) are both units of weight. The exact factor is 1 oz = 0.0283495 kg, so multiply by 0.0283495 to go from ounces to kilograms (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Kilograms to Ounces converter, or the full unit converter for every unit at once.
Real-world weight in ounces and kilograms
| Example | Ounces | Kilograms |
|---|---|---|
| 1 litre of water | ≈ 35.27396 oz | ≈ 1 kg |
| An Olympic men's barbell | 705.4792 oz | 20 kg |
| A typical checked-bag limit (economy) | ≈ 811.3011 oz | ≈ 23 kg |
| A typical family car | ≈ 52,910.94 oz | ≈ 1,500 kg |
“≈” marks typical values; the rest are defined or measured figures.
The units
The avoirdupois ounce: 1/16 of a pound, exactly 28.349523125 g.
Used for: US food packaging, postage and cooking.
The SI base unit of mass, defined since 2019 by fixing the Planck constant at 6.62607015 × 10⁻³⁴ J·s.
Used for: Body weight and goods almost everywhere.
These factors are exact: since 1959 the avoirdupois pound is defined as exactly 0.45359237 kg, and the ounce as 1/16 of that.