Ounces to Grams Converter (oz to grams)
Enter a value in ounces to see it in grams instantly, or type in the grams box to convert the other way. 1 ounce = 28.349523 grams, and 1 gram = 0.035273962 ounces.
One ounce is 28.35 g, so 4 oz is 113 g and 8 oz is 227 g. This is the weight ounce; a fluid ounce is a volume (29.57 mL), covered by the ml to oz page.
1 ounce = 28.349523 grams. Formula: g = oz × 28.349523 (or oz ÷ 0.035273962)
1 ounce in all weight units
| Milligrams (mg) | 28,349.523 |
| Grams (g) | 28.349523 |
| Kilograms (kg) | 0.028349523 |
| Metric tons (t) | 0.0000283495 |
| Pounds (lb) | 0.0625 |
| Stones (st) | 0.0044642857 |
| US tons (US ton) | 0.00003125 |
| UK tons (UK ton) | 0.0000279018 |
| Newtons (N) | 0.27801385 |
How to convert ounces to grams
g = oz × 28.349523
Multiply the number of ounces by 28.349523. To convert grams back to ounces, multiply by 0.035273962, or divide by 28.349523.
Example: 5 ounces × 28.349523 = 141.74762 grams.
Ounces to Grams conversion table
| Ounces | Grams |
|---|---|
| 1 oz | 28.349523 g |
| 2 oz | 56.699046 g |
| 3 oz | 85.048569 g |
| 4 oz | 113.39809 g |
| 5 oz | 141.74762 g |
| 6 oz | 170.09714 g |
| 7 oz | 198.44666 g |
| 8 oz | 226.79619 g |
| 9 oz | 255.14571 g |
| 10 oz | 283.49523 g |
| 12 oz | 340.19428 g |
| 15 oz | 425.24285 g |
| 20 oz | 566.99046 g |
| 25 oz | 708.73808 g |
| 30 oz | 850.48569 g |
| 40 oz | 1,133.9809 g |
| 50 oz | 1,417.4762 g |
| 60 oz | 1,700.9714 g |
| 70 oz | 1,984.4666 g |
| 75 oz | 2,126.2142 g |
| 80 oz | 2,267.9619 g |
| 90 oz | 2,551.4571 g |
| 100 oz | 2,834.9523 g |
| 200 oz | 5,669.9046 g |
| 250 oz | 7,087.3808 g |
| 500 oz | 14,174.762 g |
| 1,000 oz | 28,349.523 g |
| Grams | Ounces |
|---|---|
| 1 g | 0.035273962 oz |
| 2 g | 0.070547924 oz |
| 3 g | 0.10582189 oz |
| 4 g | 0.14109585 oz |
| 5 g | 0.17636981 oz |
| 6 g | 0.21164377 oz |
| 7 g | 0.24691773 oz |
| 8 g | 0.2821917 oz |
| 9 g | 0.31746566 oz |
| 10 g | 0.35273962 oz |
| 12 g | 0.42328754 oz |
| 15 g | 0.52910943 oz |
| 20 g | 0.70547924 oz |
| 25 g | 0.88184905 oz |
| 30 g | 1.0582189 oz |
| 40 g | 1.4109585 oz |
| 50 g | 1.7636981 oz |
| 60 g | 2.1164377 oz |
| 70 g | 2.4691773 oz |
| 75 g | 2.6455471 oz |
| 80 g | 2.821917 oz |
| 90 g | 3.1746566 oz |
| 100 g | 3.5273962 oz |
| 200 g | 7.0547924 oz |
| 250 g | 8.8184905 oz |
| 500 g | 17.636981 oz |
| 1,000 g | 35.273962 oz |
About the ounce and the gram
The avoirdupois ounce is 1/16 of a pound, exactly 28.349523125 g. Food portions and small packages in the US use ounces.
The gram is one thousandth of a kilogram. Food labels, recipes, jewellery and postage use grams.
Frequently asked questions
How many grams are in a ounce?
There are 28.349523 grams in 1 ounce. For any number of ounces, multiply by 28.349523.
How many ounces are in a gram?
1 gram = 0.035273962 ounces. To convert grams to ounces, multiply by 0.035273962 or divide by 28.349523.
What is 5 ounces in grams?
5 ounces = 141.74762 grams (5 × 28.349523).
Is the oz to grams conversion exact?
Yes. The 1959 international agreement defined the avoirdupois pound as exactly 0.45359237 kg, so the ounce, stone and ton factors are exact too. Newtons use standard gravity, 9.80665 m/s², which is also an exact defined value. Results are rounded to eight significant digits for display.
Related calculators
Last updated . Formulas are shown on the page and checked against the worked example.
Conversion factors are exact international definitions where one exists and standard reference values elsewhere. Results are rounded to 8 significant digits.