Convert ounces to kilograms (and back) — with the full weight family, including stone and all three tons.
Advanced options
converted value
| 1 oz | 0.02835 kg |
| 16 oz | 0.4536 kg (1 lb) |
| 35.274 oz | 1 kg |
| 100 oz | 2.83495 kg |
| 8 oz | 0.2268 kg |
| 1 kg | 2.20462 lb |
How to use this tool
Type any amount (fractions and decimals allowed).
Choose the From and To units, or tap Swap to reverse the conversion.
The result, the per-unit rate and the full unit family are shown together, live as you type.
The reference table covers the values people look up most, so you can sanity-check at a glance.
Formula & worked example
16 oz = 0.4536 kg — exactly 1 pound. 35.27 oz makes 1 kilogram, and 100 oz is 2.835 kg.
Limitations — read this before you rely on it
Ounces here are avoirdupois weight ounces (the everyday ounce). Troy ounces, used for precious metals, are heavier at 31.1035 g each.
Frequently asked questions
35.274 ounces in one kilogram.
35.27 oz (35.27396195 exactly).
0.4536 kg — exactly one pound.
Divide ounces by 35.274, or multiply by 0.02835.
No — a weight ounce measures mass; a fluid ounce measures volume. They only coincide for water-like liquids.