One avoirdupois ounce is exactly 28.349523125 grams. Remember that recipes usually mean weight ounces, not fluid ounces, which measure volume; a fluid ounce of water weighs about 29.6 grams, slightly more than an ounce by weight.
Calculator
Formula used
grams = ounces × 28.349523125 · ounces = grams ÷ 28.349523125
How to use the Ounces to Grams Converter
- Enter a weight in ounces.
- Read the equivalent in grams.
- Or enter grams to convert back to ounces.
- Use the table for common kitchen amounts.
About this tool
The Ounces to Grams Converter is built for speed and accuracy: every calculation runs in your browser, so your data never leaves your device and the result updates as you type. It works equally well on a phone, a tablet or a desktop, and it is free to use as many times as you like.
Common use cases
- Converting recipe quantities for a digital scale.
- Checking postage and parcel weights.
- Comparing packaged food sizes.
- Measuring ingredients for baking precisely.
Tips for the best result
- Use the latest figures you have - even a small change in rate or term can shift the outcome by hundreds.
- For annual figures, divide by 12 to get a monthly number you can compare with the result.
- Bookmark this page and revisit the calculation as the inputs change.
Frequently asked questions
Is a fluid ounce the same as an ounce?
No. A fluid ounce measures volume (about 29.57 ml) while this converter uses the weight ounce of 28.35 g.
How many grams is 8 oz?
About 227 grams, which is why butter in US recipes is often labelled 8 oz / 227 g.
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