In 1 ounces there are 0.02835 kilograms. Meanwhile in 1 kilograms there are 35.273962 ounces. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Kilograms to Ounces calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert ounces (oz) to kilograms (kg), use this fixed mass conversion:
Example:
For the reverse conversion:
Tip: This is for avoirdupois ounces (the standard ounce used for body weight and most everyday items).
There are 0.028349523125 kilograms in 1 ounce (oz).
A quick rule: 1 oz ≈ 0.02835 kg.
Use this formula:
kilograms = ounces × 0.028349523125
Example: 10 oz × 0.028349523125 = 0.283495 kg (about 0.2835 kg).
1 oz = 0.028349523125 kg (about 0.02835 kg).
8 oz = 8 × 0.028349523125 = 0.226796 kg (about 0.2268 kg).
16 oz = 16 × 0.028349523125 = 0.453592 kg (about 0.4536 kg).
This is also 1 pound in metric form.
32 oz = 32 × 0.028349523125 = 0.907185 kg (about 0.9072 kg).
64 oz = 64 × 0.028349523125 = 1.81437 kg (about 1.814 kg).
100 oz = 100 × 0.028349523125 = 2.83495 kg (about 2.835 kg).
There are 35.27396195 ounces in 1 kilogram.
A quick rule: 1 kg ≈ 35.274 oz.
Use this formula:
ounces = kilograms × 35.27396195
Example: 2 kg × 35.27396195 = 70.5479 oz (about 70.55 oz).
In everyday use, an ounce is treated as a weight. In science, it lines up with mass under standard gravity. For most cooking, shipping, and daily use, the difference doesn’t matter.
oz measures weight.
fl oz (fluid ounces) measures volume.
You can only convert fl oz to kilograms if you know the liquid’s density (or use a known conversion for that specific liquid). Water is a common example.
Yes, for water only, you can estimate using this common shortcut:
Example: 16 US fl oz of water ≈ 16 × 0.02957 = 0.4731 kg (about 0.473 kg).
Results vary due to:
Yes. The common one is the avoirdupois ounce, used in the US and many other places for everyday items.
Make sure you know which ounce you have before converting to kilograms.
A troy ounce is heavier than a standard ounce.
1 troy oz = 0.0311034768 kg (about 0.03110 kg).
Gold is often measured in troy ounces, not standard ounces.
So 1 oz of gold (troy) = 0.0311034768 kg.
For a fast estimate:
Example: 70 oz ÷ 35 ≈ 2 kg.
Use the full factor 0.0283495 when you need more accuracy.
It depends on use:
Here are quick reference values (standard ounces):
The Calculate Box tool to convert ounces to kilograms uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a ounces value in the box and have it instantly converted to kilograms.