Ounces to grams
One oz equals 28.34952313 g. Type any number and the answer appears as you type — the maths happens in your browser.
Result
The same value in every unit
| Unit | Value |
|---|
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Common values
| ounces | grams |
|---|---|
| 1 oz | 28.349523 g |
| 2 oz | 56.699046 g |
| 3 oz | 85.048569 g |
| 5 oz | 141.74762 g |
| 10 oz | 283.49523 g |
| 15 oz | 425.24285 g |
| 20 oz | 566.99046 g |
| 25 oz | 708.73808 g |
| 50 oz | 1417.4762 g |
| 100 oz | 2834.9523 g |
| 500 oz | 14174.762 g |
| 1000 oz | 28349.523 g |
How to use
- Enter the number of ounces in the field.
- The result in grams updates on every keystroke.
- Use the table below for the values people look up most often.
Formula and reverse conversion
The formula
To convert by hand: g = oz × 28.34952313. Going back the other way, one g is 0.03527396195 oz.
Where the odd number comes from
The factor is not a round number because the imperial units are defined through the metric ones by international agreement: an inch is exactly 25.4 mm and a pound is exactly 0.45359237 kg. Everything else follows from those definitions.
g = oz × 28.34952313
Frequently asked questions
How many grams are in one ounces?
One oz is 28.34952313 g.
How do I convert ounces to grams?
Multiply by the factor: g = oz × 28.34952313.
Is the result exact?
The factors are the exact legal definitions, and up to ten significant digits are kept in the answer. Rounding happens only in the display.
How do I convert grams back to ounces?
One g is 0.03527396195 oz — or open the reverse page linked below.