Ounces to Grams Converter
Convert ounces (oz) to grams (g). One ounce equals 28.3495 grams, so multiply a value in ounces by 28.3495 to get grams.
Formula: multiply the source value by 28.34952313
Quick Conversions
About this tool
The avoirdupois ounce is 1/16 of a pound, exactly 28.349523125 grams. A gram is one thousandth of a kilogram. Because 1 ounce is 0.0283495231 kilograms and 1 gram is 0.001 kilograms, the factor is their ratio, 28.349523125.
How to use it
- Type a value in ounces in the first field. The unit menus start on oz → g.
- Read the result in grams. It updates as you type; use Precision to choose how many decimals are shown.
- Press the swap button, or open the Grams to Ounces converter, to convert grams back to ounces.
g = oz × 28.349523125
oz = g ÷ 28.349523125
Examples
1 oz to g
1 oz × 28.3495 = 28.3495 g.
8 oz to g (half a pound)
8 oz × 28.3495 = 226.796 g.
16 oz to g (one pound)
16 oz × 28.3495 = 453.592 g.
Ounces to grams conversion table
| Ounces (oz) | Grams (g) |
|---|---|
| 1 | 28.3495 |
| 2 | 56.699 |
| 3 | 85.0486 |
| 4 | 113.398 |
| 5 | 141.748 |
| 10 | 283.495 |
| 15 | 425.243 |
| 20 | 566.99 |
| 25 | 708.738 |
| 50 | 1,417.48 |
| 100 | 2,834.95 |
| 250 | 7,087.38 |
| 500 | 14,174.8 |
| 1,000 | 28,349.5 |
Grams to ounces (reverse)
| Grams (g) | Ounces (oz) |
|---|---|
| 1 | 0.035274 |
| 5 | 0.17637 |
| 10 | 0.35274 |
| 50 | 1.7637 |
| 100 | 3.5274 |
FAQ
How many grams are in one ounce?
One ounce is 28.3495 grams. The unrounded factor is 28.349523125.
How do I convert grams back to ounces?
Divide by 28.3495, or multiply by 0.035274. For example, 10 g is 0.35274 oz.
Are fluid ounces the same as ounces?
No. A fluid ounce measures volume, while an ounce measures mass. One US fluid ounce of water has a mass of roughly 29.5 g, close to but not the same as 1 oz (28.35 g). For volume, use the fluid ounces converter.
Is the conversion exact?
Yes, before rounding. The pound has been defined as exactly 0.45359237 kg since 1959, and the ounce as 1/16 of that.