This ounces to grams converter gives you the oz to g result instantly, in your browser, with the exact ratio so you can verify it. 1 ounce is about 28.3495 grams, and going the other way, 1 gram is 0.035274 ounces. Ounces are an imperial unit still common in the United States and the United Kingdom; grams are part of the metric system used in most countries.
To convert by hand, multiply the number of ounces by 28.3495. For example, 10 ounces is 283.495 grams and 100 ounces is 2,834.95 grams. The table below lists the most requested values, and the converter above accepts decimals for anything in between.
oz to g formula
g = oz × 28.3495
1 ounce is about 28.3495 grams. Multiply the value in ounces by that factor to get grams.
Ounces to Grams conversion table
| ounces | grams | Rounded |
|---|---|---|
| 1 oz | 28.3495 g | 28.3 |
| 2 oz | 56.699 g | 56.7 |
| 3 oz | 85.0486 g | 85 |
| 4 oz | 113.398 g | 113 |
| 5 oz | 141.748 g | 142 |
| 6 oz | 170.097 g | 17 |
| 7 oz | 198.447 g | 198 |
| 8 oz | 226.796 g | 227 |
| 9 oz | 255.146 g | 255 |
| 10 oz | 283.495 g | 283 |
| 12 oz | 340.194 g | 34 |
| 15 oz | 425.243 g | 425 |
| 20 oz | 566.99 g | 567 |
| 25 oz | 708.738 g | 709 |
| 30 oz | 850.486 g | 85 |
| 40 oz | 1,133.98 g | 1,134 |
| 50 oz | 1,417.48 g | 1,417 |
| 60 oz | 1,700.97 g | 1,701 |
| 70 oz | 1,984.47 g | 1,984 |
| 75 oz | 2,126.21 g | 2,126 |
| 80 oz | 2,267.96 g | 2,268 |
| 90 oz | 2,551.46 g | 2,551 |
| 100 oz | 2,834.95 g | 2,835 |
| 150 oz | 4,252.43 g | 4,252 |
| 200 oz | 5,669.9 g | 567 |
| 250 oz | 7,087.38 g | 7,087 |
| 300 oz | 8,504.86 g | 8,505 |
| 500 oz | 14,174.8 g | 14,175 |
| 750 oz | 21,262.1 g | 21,262 |
| 1,000 oz | 28,349.5 g | 2,835 |
Frequently asked questions
How many grams are in 5 ounces?
5 oz = 141.748 g. Multiply 5 by 28.3495, the number of grams in one ounce. The converter on this page does the same arithmetic for any value, including decimals.
What is the formula to convert ounces to grams?
g = oz × 28.3495. The factor comes from the definitions of the units: 1 ounce is about 28.3495 grams. Worked example: 12 oz = 340.194 g.
Is 30 oz the same as 850.486 g?
Yes. 30 oz = 850.486 g. Rounded to four decimals it is 850.5 g.
How do I convert grams back to ounces?
Divide by 28.3495, or multiply by 0.035274: 1 gram is 0.035274 ounces. The grams to ounces page linked above lists common values the other way.
Is the oz to g conversion exact?
1 ounce is about 28.3495 grams. The ratio is a defined constant but produces a long decimal, so this page rounds to six significant digits, which is more precision than any everyday measurement needs.