Private by design. Values are converted on your device and never uploaded.
Ounces to Grams converter
Enter a number, fraction, power, π, or arithmetic expression.1 oz = 28.349523125 g grams = ounces × 28.349523125
Ready for local conversionOunces to Grams formula
grams = ounces × 28.349523125
1 avoirdupois ounce = exactly 28.349523125 grams
Sixteen avoirdupois ounces make one international pound, and that pound is exactly 453.59237 grams.
How to convert Ounces to Grams
Multiply ounces by exactly 28.349523125. Avoid substituting fluid ounces, which measure volume and require the substance's density for a mass conversion.
Example calculation
An 8 oz package has a mass of 226.796185 g: 8 × 28.349523125 = 226.796185.
8 oz = 226.796185 g
When this conversion is useful
Use ounces to grams when adapting recipes to a metric scale, completing customs forms, comparing nutrition portions, or relabeling product mass.
Common Ounces to Grams conversions
| Ounces (oz) | Grams (g) |
|---|---|
| 1 | 28.349523125 |
| 4 | 113.3980925 |
| 8 | 226.796185 |
| 12 | 340.1942775 |
| 16 | 453.59237 |
| 32 | 907.18474 |
Ounces to Grams FAQ
One avoirdupois ounce contains exactly 28.349523125 grams.
No. Ounces measure mass, while fluid ounces measure volume. They are only related when the density of a specific substance is known.
Sixteen ounces equal one pound, or exactly 453.59237 grams.