Ounces to Grams Converter.
Ounces are widely used on US product labels, while grams appear on metric packaging worldwide. Multiply ounces by 28.349523125 to convert to grams.
Result
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Conversion formula
Multiply the ounce value by 28.34952313 to get grams. (factor: 28.349523125)
1 oz = 28.349523125 g
Quick reference table
| oz | g |
|---|---|
| 1 oz | 28.349523125 g |
| 2 oz | 56.69904625 g |
| 4 oz | 113.3980925 g |
| 8 oz | 226.796185 g |
| 12 oz | 340.1942775 g |
| 16 oz | 453.59237 g |
| 32 oz | 907.18474 g |
| 64 oz | 1,814.36948 g |
Need the reverse? Try ourGram to Ounce.
Ounce to Gram FAQ
How many grams is 1 oz?
One ounce equals 28.349523125 grams.
How many ounces are in 100 grams?
100 grams equals approximately 3.527 ounces.
Why do US nutrition labels use ounces and grams?
US law requires dual labeling in customary and metric units on many packaged foods, helping consumers compare products regardless of measurement system.