Ounces to Grams Converter
Convert ounces (oz) to grams (g) for cooking and baking. The key ratio: 1 ounce equals 28.3495 grams. Whether you're adapting an American recipe for a kitchen scale or portioning ingredients, this converter gives you instant results.
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We kept seeing the same mistake in baking forums: someone has a recipe calling for '4 ounces of butter' and a kitchen scale that only reads grams. The multiplier is 28.3495 — locked in since the international yard and pound agreement six nations signed in 1959.
Four ounces is 113.4 grams, eight is 226.8, sixteen — one full pound — comes out to 453.6. Unlike cups-to-grams, this ratio never changes regardless of what you weigh, because both units measure weight on the same physical scale.
The trap, and the USDA's FoodData Central warns about this explicitly, is the word 'ounce' meaning two different things: '8 oz of cream cheese' means 226.8 grams on a scale, but '8 oz of milk' usually means fluid ounces — a volume measure that weighs 244.8 grams because milk is denser than water.
King Arthur Baking found the same 10 to 15 percent variance we keep warning about: their flour weight guide puts a cup of all-purpose anywhere from 113 to 142 grams depending on scooping technique. Professional pastry programs in Europe teach grams from day one for exactly that reason.
The shift is happening in the US too — King Arthur, Serious Eats, and America's Test Kitchen all print gram weights now. But USDA nutrition labels still list ounces, which is why most American home cooks reach for ounces first and need a converter to bridge the gap.
Ounces to Grams — Quick Reference Chart
| Ounces | Grams | Common Use |
|---|---|---|
| 0.5 oz | 14.17g | Small spice packet |
| 1 oz | 28.35g | Slice of cheese |
| 2 oz | 56.70g | Portion of pasta (dry) |
| 3 oz | 85.05g | Serving of meat |
| 4 oz (¼ lb) | 113.40g | Stick of butter (half) |
| 6 oz | 170.10g | Yogurt container |
| 8 oz (½ lb) | 226.80g | Full stick of butter |
| 12 oz | 340.19g | Standard can size |
| 16 oz (1 lb) | 453.59g | One pound |
| 32 oz (2 lb) | 907.18g | Nearly one kilogram |
Frequently Asked Questions
How many grams are in an ounce?
One ounce equals 28.3495 grams. For quick mental math, rounding to 28g per ounce is close enough for most cooking purposes.
What's the difference between ounces and fluid ounces?
Ounces (oz) measure weight, while fluid ounces (fl oz) measure volume. This converter handles weight ounces. For water, 1 fl oz weighs about 1 oz, but this doesn't hold for other ingredients.
How many grams in a pound?
One pound (16 ounces) equals 453.59 grams, or roughly 454g. A kilogram is about 2.2 pounds.
How do I convert grams back to ounces?
Divide the grams by 28.3495. For example, 200g ÷ 28.3495 ≈ 7.05 oz. Or use our Grams to Cups converter for volume-based measurements.
Are cooking ounces the same as troy ounces?
No. Cooking uses avoirdupois ounces (28.35g). Troy ounces (31.10g) are used for precious metals. This converter uses cooking (avoirdupois) ounces.