Ounces, Pounds, and Grams: Kitchen Weight Conversions That Work
October 21, 2026
One avoirdupois ounce equals 28.3495 grams, and one pound (16 ounces) equals 453.592 grams. To convert ounces to grams, multiply by 28.35; to convert grams to ounces, divide by 28.35. An 8 oz block of cheese is therefore about 227 g, and a 250 g pack of butter is about 8.8 oz.
Skip the math and get your answer instantly:
Open the Weight Converter →Conversion Table
Recipes often round 1 oz to 30 g or 28 g and 1 lb to 450 g, which is fine for cooking but can matter for baking, where ratios of flour, sugar, and fat affect texture.
| Ounces | Pounds | Grams (exact) | Grams (rounded in recipes) |
|---|---|---|---|
| 1 oz | 0.0625 lb | 28.35 g | 28 to 30 g |
| 4 oz | 0.25 lb | 113.4 g | 113 g |
| 8 oz | 0.5 lb | 226.8 g | 225 g |
| 12 oz | 0.75 lb | 340.2 g | 340 g |
| 16 oz | 1 lb | 453.6 g | 450 g |
Fluid Ounces Are Not Weight Ounces
A fluid ounce measures volume (about 29.57 mL), while a weight ounce measures mass. They coincide only roughly for water: a US fluid ounce of water weighs about 1.04 ounces. For other ingredients, they can differ substantially. A cup (8 fluid ounces) of flour weighs around 4.25 oz, and a cup of honey about 12 oz.
When a recipe says '8 oz of milk', check whether the author means volume or weight. Packaged goods list net weight in ounces, while liquids use fluid ounces.
Why Weigh Ingredients
A kitchen scale that switches between grams and ounces removes the guesswork. Place the bowl on the scale, press tare, and add each ingredient in turn. Weighing is faster and more accurate than measuring cups, and it gives consistent results for baking.
Most professional recipes list ingredients in grams for this reason, and gram scales are inexpensive.
Frequently Asked Questions
How many grams are in an ounce?
28.3495 grams, usually rounded to 28 or 30 in recipes.
How many ounces are in a pound?
16 ounces.
Is a fluid ounce the same as an ounce of weight?
No. A fluid ounce is a unit of volume, while an ounce is a unit of weight.
How many grams are in half a pound?
About 227 grams.