Ounces to Grams Converter
Enter a value in ounces to convert it to grams — 1 oz = 28.3495 g.
Reviewed by the ToolNestr Editorial Team — July 2026
How to convert ounces to grams
Converting ounces to grams is a simple multiplication: take your weight in ounces and multiply by the fixed conversion factor of 28.349523125 to get grams. Because the factor never changes, the same calculation works for any value, from tiny amounts to very large ones. The converter above applies it the moment you type, with no rounding errors in the underlying maths.
Bakers and cooks use it constantly to turn ounces from a recipe into the grams shown on a digital scale. Knowing how to move between ounces and grams is useful whenever measurements are given in one system but you need them in the other — for shopping, travel, study, cooking, engineering or simply comparing figures from different countries.
The reference table below lists common ounces values already converted to grams, so you can read off everyday amounts at a glance without typing. For the opposite direction, use the Grams to Ounces Converter, which reverses the calculation exactly.
The formula and a worked example
Formula
g = oz × 28.349523125
Worked example
To convert 10 ounces: 10 × 28.349523125 = 283.4952 g. To convert 25 ounces: 25 × 28.349523125 = 708.7381 g.
Ounces to Grams conversion table
| Ounces (oz) | Grams (g) |
|---|---|
| 1 | 28.3495 |
| 2 | 56.699 |
| 5 | 141.7476 |
| 10 | 283.4952 |
| 25 | 708.7381 |
| 50 | 1,417.4762 |
| 100 | 2,834.9523 |
| 250 | 7,087.3808 |
| 500 | 14,174.7616 |
| 1,000 | 28,349.5231 |
Values are rounded for display; the converter above keeps full precision.
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Frequently asked questions
How do I convert ounces to grams?
Multiply the number of ounces by 28.349523125. For example, 10 oz × 28.349523125 = 283.4952 g. The converter above does this automatically.
How many grams are in one ounces?
There are 28.3495 grams in one ounces. Multiply by 28.349523125 for any amount.
Is this Ounces to Grams converter accurate?
Yes. It uses the exact conversion factor of 28.349523125, so results are precise. Values shown in the table are rounded for readability.
How do I convert grams back to ounces?
Use our Grams to Ounces Converter for the reverse direction, or divide the grams value by 28.349523125.