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ounces to grams
Convert avoirdupois ounces to grams for labels and recipes.
1 ounce equals 28.349523125 grams. This free ounces to grams converter multiplies ounces by that exact factor. Use it when a US recipe or package lists ounces and you need grams on a metric scale. The chart matches the widget for common ounce values. No sign-up is required.
How to convert ounces to grams
Multiply ounces by 28.349523125. In short: grams = ounces × 28.349523125.
Example: 8 oz × 28.349523125 = 226.7962 g. So 8 ounces is 226.7962 grams.
Use the converter above for any value. Use the chart below when you need a common number fast.
ounces to grams conversion chart
Common ounce values converted to grams, rounded to four decimal places.
| Ounces (oz) | Grams (g) |
|---|---|
| 1 oz | 28.3495 g |
| 2 oz | 56.6990 g |
| 3 oz | 85.0486 g |
| 5 oz | 141.7476 g |
| 10 oz | 283.4952 g |
| 20 oz | 566.9905 g |
| 25 oz | 708.7381 g |
| 50 oz | 1417.4762 g |
| 75 oz | 2126.2142 g |
| 100 oz | 2834.9523 g |
Scan the chart for quick checks. Use the converter above when your number is not listed.
Common ounces to grams conversions
1 ounce is 28.3495 grams. 2 ounces is 56.6990 grams.
4 ounces is 113.3981 grams. 8 ounces is 226.7962 grams.
12 ounces is 340.1943 grams. 16 ounces is 453.5924 grams, one pound.
Coffee bags and protein scoops often list ounces in the US while international guides use grams only.
Why convert ounces to grams
Many kitchen scales toggle between oz and g. Writing the grams value avoids mode mix-ups mid recipe.
This tool uses the avoirdupois ounce used for food and general goods in the US. It is not the troy ounce used for gold and silver.
Shipping and postage rates may also list grams abroad. Converting from ounces first keeps weight limits clear.
More free converters
Need the reverse tool? Open grams to ounces. For the full set, visit the weight converter hub. Related: grams to ounces and lbs to kg.
See NIST - SI units for mass for mass unit context.