Convert ounces to grams
Converting ounces to grams is a common weight task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 oz equals 28.3495 g, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert ounces to grams
To convert ounces to grams, multiply the number of ounces by 28.3495. For example, 10 oz × 28.3495 = 283.495 g.
g = oz × 28.3495
- Write down the value in ounces you want to convert.
- Multiply it by 28.3495 (the exact oz→g factor).
- The result is your value in grams. Check it below with the converter or the table.
Conversion table
Common values of ounces and their equivalents in grams:
| oz | g |
|---|---|
| 1 | 28.3495 |
| 2 | 56.699 |
| 3 | 85.0486 |
| 4 | 113.398 |
| 5 | 141.748 |
| 10 | 283.495 |
| 20 | 566.99 |
| 25 | 708.738 |
| 50 | 1,417.48 |
| 100 | 2,834.95 |
| 250 | 7,087.38 |
| 500 | 14,174.8 |
About these units
Ounce (oz). The avoirdupois ounce is a US customary unit defined as exactly 28.349523125 grams, or 1/16 of a pound. Food portions and packaged goods in the US are labeled in ounces.
Gram (g). The gram is the metric unit for everyday small masses, defined as one thousandth of a kilogram. Recipes, nutrition labels and postage are commonly specified in grams.
Frequently asked questions
How do I convert ounces to grams?
To convert ounces to grams, multiply the number of ounces by 28.3495. For example, 10 oz × 28.3495 = 283.495 g. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many grams are in 1 ounce?
1 oz = 28.3495 g. That is the fixed relationship used by this converter and by international standards.
How many ounces are in 1 gram?
1 g = 0.035274 oz. If you are converting in the opposite direction, use our Gram to Ounce converter for the dedicated table and FAQ.
Is the ounces to grams conversion exact?
Yes. Both units are defined by international agreement, so the factor of 28.3495 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is ounce used for?
The avoirdupois ounce is a US customary unit defined as exactly 28.349523125 grams, or 1/16 of a pound. Food portions and packaged goods in the US are labeled in ounces.