Ounces to Grams Converter
There are exactly 28.3495 grams in one ounce. To convert ounces to grams, multiply by 28.3495.
How to Convert Ounces to Grams
To convert ounces to grams, multiply by 28.3495.
For example: 5 ounces × 28.3495 = 141.748 grams.
Where This Comes Up
American recipes measure chocolate, cheese, pasta and meat in ounces, while European recipes and every nutrition label use grams. Bakers converting between them need this one constantly.
An 8-ounce block of cream cheese is 226.796 grams, which is why European recipes call for a 225 g pack.
What People Get Wrong
An ounce of weight and a fluid ounce of volume are different units. 8 fluid ounces of water happens to weigh about 8 ounces, but 8 fluid ounces of flour weighs only about 4.2 ounces.
Ounces to Grams Conversion Table
| Ounces (oz) | Grams (g) |
|---|---|
| 1 | 28.3495 |
| 2 | 56.699 |
| 3 | 85.0486 |
| 4 | 113.398 |
| 5 | 141.748 |
| 6 | 170.097 |
| 7 | 198.447 |
| 8 | 226.796185 |
| 9 | 255.146 |
| 10 | 283.495 |
| 11 | 311.845 |
| 12 | 340.194 |
| 13 | 368.544 |
| 14 | 396.893 |
| 15 | 425.243 |
| 16 | 453.59237 |
| 17 | 481.942 |
| 18 | 510.291 |
| 19 | 538.641 |
| 20 | 566.99 |
| 25 | 708.738 |
| 30 | 850.486 |
| 40 | 1,133.98 |
| 50 | 1,417.48 |
| 75 | 2,126.21 |
| 100 | 2,834.95 |
| 250 | 7,087.38 |
| 500 | 14,174.8 |
| 1,000 | 28,349.5 |
About These Units
The ounce
An avoirdupois ounce is one sixteenth of a pound, or exactly 28.349523125 grams. Do not confuse it with the fluid ounce, which measures volume, not weight.
The gram
A gram is one thousandth of a kilogram, roughly the weight of a paperclip. Nutrition labels worldwide, and increasingly American baking recipes, are written in grams.
Definitions follow NIST Special Publication 811, Appendix B. See how we calculate for the exact values and rounding rules.
Frequently Asked Questions
How many grams is 1 oz?
One avoirdupois ounce is exactly 28.349523125 grams, usually rounded to 28.35 g.
Is 28 grams close enough?
It is 1.2 percent light. On a 16-ounce recipe that is about 5.6 grams, which matters in baking but not in a stew.
How many grams is 4 ounces of chicken?
4 ounces is 113.398 grams, the standard serving size nutrition labels round to 113 g.
What about a troy ounce?
A troy ounce, used for gold and silver, is 31.1034768 grams — about 10 percent heavier than the ounce on this page.