Convert ounces to grams
Enter a value in ounces (oz) to get grams (g). One ounce is 28.3495 grams; one gram is 0.035274 ounces.
How to use the Ounce to gram
- Type the number of ounces.
- Click Convert.
- Read the result in grams, plus the same value in every other weight & mass unit.
oz to g formula
grams = ounces × 28.3495. To go the other way, ounces = grams × 0.035274 (see grams to ounces).
Worked example
12 oz × 28.3495 = 340.1943 g.
Ounces to grams conversion table
| Ounces | Grams |
|---|---|
| 0.1 oz | 2.835 g |
| 0.5 oz | 14.1748 g |
| 1 oz | 28.3495 g |
| 2 oz | 56.699 g |
| 3 oz | 85.0486 g |
| 5 oz | 141.7476 g |
| 10 oz | 283.4952 g |
| 20 oz | 566.9905 g |
| 25 oz | 708.7381 g |
| 50 oz | 1,417.48 g |
| 100 oz | 2,834.95 g |
| 250 oz | 7,087.38 g |
| 500 oz | 14,174.76 g |
| 1,000 oz | 28,349.52 g |
About the ounce
One sixteenth of a pound, exactly 28.349523125 g. Food and postage in the USA.
About the gram
One thousandth of a kilogram; the kitchen and postal unit across the metric world.
Related conversions
Frequently asked questions
How many grams in a ounce?
28.3495 grams.
How many ounces in a gram?
0.035274 ounces.
Is the factor exact?
The factor 28.3495 is derived from the units' exact definitions; only the display is rounded.
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Last updated 2026-09-23.