How many grams are in one ounce?
One ounce is 28.35 g.
Ounces to Grams
Type a value to convert it from ounces to grams. One oz equals 28.35 g.
Result
Ounces and grams, side by side
One ounce is 28.35 g. In the other direction, one gram is 0.03527 oz.
The factor is exact rather than rounded: imperial and US units have been defined from the metric ones since 1959, so the conversion introduces no error of its own. What you see below is arithmetic, not an approximation.
The ounce here is the avoirdupois ounce, one sixteenth of a pound and exactly 28.349523125 grams. It measures food portions in the United States. Precious metals use a different unit, the troy ounce of about 31.1 grams, which is the one quoted in the price of gold.
The gram is one thousandth of a kilogram, the unit of food labels, recipes and postage. Nutrition facts are given per 100 g in most of the world, and a paper clip weighs about one gram.
| Ounce | Gram |
|---|---|
| 1 | 28.3495 |
| 5 | 141.748 |
| 10 | 283.495 |
| 50 | 1,417.48 |
| 70 | 1,984.47 |
| 100 | 2,834.95 |
Frequently asked questions
How do I convert grams back to ounces?
One gram is 0.03527 oz. The tool above converts in both directions.
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