Grams to Ounces
Result:
Enter a weight to convert.
Convert grams to ounces. From is set to grams and To is set to ounces. The result updates as you type. One avoirdupois ounce is exactly 28.349523125 grams. This is not a troy ounce. Other units are on the weight converter. The other direction is ounces to grams.
Grams to ounces formula
One pound is 16 avoirdupois ounces, and one pound is 0.45359237 kg exactly, so 1 ounce = 28.349523125 grams. NIST Handbook 44 (2024), Appendix C lists that same ounce.
Formula: ounces = grams ÷ 28.349523125.
The converter divides by that exact ounce, then rounds the displayed result to five decimal places.
Example: 100 g ÷ 28.349523125 = 3.52740 oz.
Grams to ounces reference table
Each value below is the converter result at five decimal places, using the avoirdupois ounce of 28.349523125 grams. Enter the same grams in the form above and the result should match.
| Grams | Ounces |
|---|---|
| 1 | 0.03527 |
| 5 | 0.17637 |
| 10 | 0.35274 |
| 25 | 0.88185 |
| 30 | 1.05822 |
| 50 | 1.76370 |
| 100 | 3.52740 |
| 150 | 5.29109 |
| 200 | 7.05479 |
| 250 | 8.81849 |
| 500 | 17.63698 |
| 750 | 26.45547 |
| 1000 | 35.27396 |
Grams to ounces examples
Baking: A recipe that calls for 250 g of butter needs 8.81849 oz on a scale marked in ounces.
Packaged food: A 500 g package of pasta is 17.63698 oz, a little over one pound (16 oz).
Nutrition labels: A 30 g serving is 1.05822 oz.
Quick mental math (approximation)
To estimate ounces, divide the grams by 28. Example: 250 g ÷ 28 is about 8.93 oz. The exact result is 8.81849 oz.
This shortcut is an approximation. It runs about 1.3 percent high. Use the converter or the exact formula when the number goes on a label, form, or record.
Grams to ounces FAQ
How many ounces are in 100 grams?
100 g is 3.52740 oz when rounded to five decimal places. That is 100 ÷ 28.349523125.
Are these the same as fluid ounces?
No. This page converts avoirdupois ounces, a unit of weight. A fluid ounce measures volume, so turning grams into fluid ounces depends on the density of the ingredient.
Does this work for gold or silver?
No. Precious metals are weighed in troy ounces. One troy ounce is exactly 31.1034768 grams, which is heavier than the 28.349523125-gram ounce used here.