Convert Ounces to Grams
One ounce equals 28.34952 grams. Type any value to convert ounces to grams instantly — with a full reference table below.
Convert Ounces to Grams
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How to convert Ounces to Grams
To convert ounces to grams, multiply by 28.34952. One ounce equals 28.34952 g, and one gram equals 0.035274 oz.
- Take the value in ounces — for example 7.5 oz.
- Multiply by 28.34952 (the number of grams in one ounce).
- 7.5 × 28.34952 = 212.6214 g.
Quick mental estimate: Multiply the number of ounces by 28 (within 1.2% of the exact answer).
Ounces to Grams conversion table
| Ounces | Grams |
|---|---|
| 1 oz | 28.34952 g |
| 2 oz | 56.69905 g |
| 3 oz | 85.04857 g |
| 4 oz | 113.3981 g |
| 5 oz | 141.7476 g |
| 6 oz | 170.0971 g |
| 7 oz | 198.4467 g |
| 8 oz | 226.7962 g |
| 9 oz | 255.1457 g |
| 10 oz | 283.4952 g |
| 12 oz | 340.1943 g |
| 15 oz | 425.2428 g |
| 20 oz | 566.9905 g |
| 25 oz | 708.7381 g |
| 50 oz | 1,417.476 g |
| 100 oz | 2,834.952 g |
| Grams | Ounces |
|---|---|
| 1 g | 0.035274 oz |
| 2 g | 0.0705479 oz |
| 3 g | 0.105822 oz |
| 4 g | 0.141096 oz |
| 5 g | 0.17637 oz |
| 6 g | 0.211644 oz |
| 7 g | 0.246918 oz |
| 8 g | 0.282192 oz |
| 9 g | 0.317466 oz |
| 10 g | 0.35274 oz |
| 12 g | 0.423288 oz |
| 15 g | 0.529109 oz |
| 20 g | 0.705479 oz |
| 25 g | 0.881849 oz |
| 50 g | 1.763698 oz |
| 100 g | 3.527396 oz |
About converting Ounces to Grams
Ounces (oz) and Grams (g) are both units of weight. The exact factor is 1 oz = 28.34952 g, so multiply by 28.34952 to go from ounces to grams (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Grams to Ounces converter, or the full unit converter for every unit at once.
Real-world weight in ounces and grams
| Example | Ounces | Grams |
|---|---|---|
| A US nickel coin | 0.17637 oz | 5 g |
| 1 litre of water | ≈ 35.27396 oz | ≈ 1,000 g |
| An Olympic men's barbell | 705.4792 oz | 20,000 g |
| A typical checked-bag limit (economy) | ≈ 811.3011 oz | ≈ 23,000 g |
“≈” marks typical values; the rest are defined or measured figures.
The units
The avoirdupois ounce: 1/16 of a pound, exactly 28.349523125 g.
Used for: US food packaging, postage and cooking.
One thousandth of a kilogram.
Used for: Cooking, postage and food packaging.
These factors are exact: since 1959 the avoirdupois pound is defined as exactly 0.45359237 kg, and the ounce as 1/16 of that.