Ounces to Grams: A Cook's Conversion Guide
Master the ounce-to-gram conversion for cooking with practical examples, reference charts, and tips for accuracy.
Use the Ounces ↔ Grams
Convert between ounces and grams
The Basic Conversion
One ounce (oz) equals 28.3495 grams. For cooking purposes, rounding to 28 grams per ounce is close enough and makes mental math much easier.
Fluid Ounces vs Weight Ounces
This is a critical distinction that confuses many cooks. The term 'ounce' can refer to two completely different things: fluid ounces measure volume (how much space something takes up), while avoirdupois ounces measure weight (how heavy something is). For water, they happen to be nearly equivalent because one fluid ounce of water weighs approximately one ounce. But for other ingredients, the relationship is completely different.
Reading Food Labels
Understanding the relationship between ounces and grams is helpful when reading food packaging. US food labels list serving sizes in both ounces and grams, while nutritional values for protein, fat, carbohydrates, fiber, and sugar are always given in grams regardless of the country. If you are tracking your food intake for fitness or health goals, you will inevitably need to work in grams. A digital kitchen scale that can toggle between ounces and grams is an invaluable tool for anyone who takes cooking or nutrition seriously.
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