Mass & Weight
Kilograms and pounds from ounces
Convert to grams first, then shift the decimal point for kilograms. Pounds come straight from the sixteen-to-one definition.
The Formula
kg = oz x 28.349523125 / 1000, lb = oz / 16
Convert to grams first, then shift the decimal point for kilograms. Pounds come straight from the sixteen-to-one definition.
| Symbol | Meaning | Unit | Notes |
|---|---|---|---|
| oz | Mass in avoirdupois ounces | ounces | The quantity you start from. |
| kg | Mass in kilograms | kilograms | Eight ounces is 0.226796185 kg. |
| lb | Mass in pounds | pounds | Sixteen ounces to the pound, so eight ounces is 0.5 lb. |
What Each Symbol Means
ozounces
Mass in avoirdupois ounces
The quantity you start from.
kgkilograms
Mass in kilograms
Eight ounces is 0.226796185 kg.
lbpounds
Mass in pounds
Sixteen ounces to the pound, so eight ounces is 0.5 lb.
See It Worked With Real Numbers
A formula on its own does not tell you which number goes where. The how to convert ounces to grams page applies this equation to a concrete case, shows every intermediate step, and names the mistakes that produce a wrong answer even when the algebra is right.
Where This Formula Appears
This equation is the working core of How To Convert Ounces To Grams, filed under Unit Conversion. Every number the guide produces comes from substituting into this one line.