Ounces to Grams: Butter Converter
Convert butter between ounces and grams using its measured density of about 227 g per cup. The widget below is pre-set to this exact conversion and recalculates as you type.
Converted amount
28.35g
1 oz of butter = 28.35 g
Exact weight
28.3 g
Ounces
1 oz
Milliliters
30 ml
Kitchen measure
1 tbsp + 3 tsp
1 cup of butter weighs about 227 g. Densities are averages — sifted flour is lighter, packed sugar is heavier. Fractions such as 1 1/2 or 3/4 are supported.
Butter conversion chart
Ounces to Grams, rounded for the kitchen.
| Ounces | Grams | Grams |
|---|---|---|
| 1 oz | 28.3 g | 28.35 g |
| 2 oz | 56.7 g | 56.7 g |
| 3 oz | 85 g | 85.05 g |
| 4 oz | 113.4 g | 113.4 g |
| 6 oz | 170.1 g | 170.1 g |
| 8 oz | 226.8 g | 226.8 g |
| 12 oz | 340.2 g | 340.19 g |
| 16 oz | 453.6 g | 453.59 g |
How to convert ounces to grams for butter
Ingredient conversion is a two-step calculation. First, ounces are turned into grams using butter's density of about 227 g per cup, or its exact weight factor for ounces. Then those grams are expressed in grams. Because every conversion passes through weight, the result is consistent whether you start from cups, tablespoons, milliliters, or ounces.
Density is the reason a universal "cups to grams" number does not exist. A cup of sifted all-purpose flour is about 120 g, while a cup of granulated sugar is about 200 g and a cup of honey about 340 g. Using one ingredient's density for another is the most common cause of dry cakes and dense breads, so always confirm the ingredient selected above matches what is in your bowl.
For the most repeatable results, weigh butter on a digital scale instead of relying on volume. If you are scaling a whole recipe, use the recipe scaler to multiply every ingredient at once, then verify individual amounts with this converter.
Frequently asked questions
How many grams is a cup of butter?
One US cup of butter weighs about 227 grams (8.01 oz). That density is what this converter uses, so volume and weight results stay consistent for every measurement on the page.
How many grams is 4 oz of butter?
4 oz of butter equals about 113.4 g (113.4 g), or 113.4 grams. Use the converter above for any other amount.
Why does butter convert differently from other ingredients?
Weight-to-volume conversions depend on ingredient density. A cup of butter weighs about 227 g, while a cup of granulated sugar weighs about 200 g and a cup of water 237 g. That is why a single "cups to grams" number cannot apply to every ingredient.
Are these Ounces to Grams conversions exact?
They use standard average densities for butter (about 227 g per cup). Actual weight varies with how the ingredient is packed, sifted, or ground, so weigh on a digital scale when a recipe is sensitive to hydration or leavening.