Ounces to grams●
Ounces in. Grams out. Convert recipes and parcels in a moment.
Weight
Use a decimal point, for example 2.54. Scientific notation works too: 1e3.
Try a value
Pick an example to startThe formula
grams = ounces × 28.349523125
Multiply the number of ounces by 28.349523125 to get grams. To go the other way, divide by the same number.
A worked example
For 8 oz, multiply 8 by 28.349523125. The result is approximately 226.796185 g.
8 × 28.349523125 ≈ 226.796185 g
Quick reference
Reference values are rounded to 6 decimal places. Use the converter above for other values or precision.
| Ounces (oz) | Grams (g) |
|---|---|
| 0.5 | 14.174762 |
| 1 | 28.349523 |
| 2 | 56.699046 |
| 4 | 113.398093 |
| 8 | 226.796185 |
| 12 | 340.194278 |
| 16 | 453.59237 |
| 32 | 907.18474 |
| 100 | 2,834.952313 |
All equivalent units
The same value, in every supported unit.
Weight conversions
For recipes, post and portions.
Use this conversion for baking, coffee, parcels and nutrition labels. One avoirdupois ounce is exactly 28.349523125 grams, so most recipes round it to 28 or 30 grams. For liquid ounces use the ml to oz page, because weight and volume are different measures.
Calculation details & precision
Weight conversions use kilograms as the base mass unit. One pound is exactly 0.45359237 kg and a stone is 14 lb. Metric tonnes, US short tons and UK long tons are separate units. Troy ounces and standard ounces use different definitions.
Automatic displays up to 12 significant digits. Choose 2, 4 or 6 decimal places in Precision for a shorter result. Displayed results are rounded; very large or small values use scientific notation.
Common questions
Is an ounce 28 or 30 grams?
Exactly 28.349523125 g. Many recipes round to 28 g, and some food labels round to 30 g.
How many grams are in 4 ounces?
4 oz is approximately 113.398093 g. The converter can show more significant digits or round to a chosen number of decimal places.