Cups of butter to grams
1 US cup of butter = 227 g (8 oz). A 250 ml metric cup = 240 g.
Type 1/2, 1 1/2 or 0.75. The cup size changes the volume; the weight scales by volume, so it assumes the same filling method in every cup.
What the sources say about a cup of butter
Two published sources, side by side. Where a source lists several forms or ways of measuring, each is a row.
| Source | What was measured | Grams per US cup | Ounces |
|---|---|---|---|
| Our default | See “why this number” below | 227 g | 8.01 oz |
| USDA FoodData Central | Salted, 1 cup | 227 g | 8.01 oz |
| King Arthur Baking | Butter (listed as 8 tablespoons (1/2 cup) = 113 g) | 226 g | 7.97 oz |
Spread across sources: 0% between USDA and King Arthur for the main entry. Ingredient weights vary by brand, packing and humidity; the table is a reference, not a guarantee.
Why this number: 227 g per US cup
We use the USDA measured weight, because for liquids, fats, syrups and free-flowing grains a measured weight is more reliable than a rounded ounce value. Where the two sources disagree, both figures are in the table above and in the calculator, so you can switch to the one your recipe was written with.
Butter is easy: a cup is 2 US sticks, 16 tablespoons, and about 227 g. USDA measures 227 g for a cup and 14.2 g for a tablespoon; King Arthur's chart is 113 g for half a cup (8 tablespoons), which scales to 226 g a cup. The actual stick, printed with tablespoon marks on the wrapper, is 4 oz or 113.4 g.
The common trap is UK and metric butter, which is sold by weight rather than in sticks. A UK block is 250 g, which is a little more than 1 US cup (227 g) and almost exactly one metric cup of butter (about 240 g). A recipe that calls for "1 cup butter" and a 250 g block are close, but not the same, and for cakes the extra 23 g is enough to notice.
Soft, melted or whipped butter measures differently by volume, but weighs the same by gram, which is the main argument for weighing it.
Cups of butter to grams chart
| US cups | Grams (US cup) | Ounces | Grams (metric 250 ml cup) |
|---|---|---|---|
| 1/8 cup | 28.4 g | 1 oz | 30 g |
| 1/4 cup | 56.8 g | 2 oz | 60 g |
| 1/3 cup | 75.7 g | 2.67 oz | 80 g |
| 1/2 cup | 113.5 g | 4 oz | 119.9 g |
| 2/3 cup | 151.3 g | 5.34 oz | 159.9 g |
| 3/4 cup | 170.2 g | 6.01 oz | 179.9 g |
| 1 cup | 227 g | 8.01 oz | 239.9 g |
| 1 1/2 cups | 340.5 g | 12.01 oz | 359.8 g |
| 2 cups | 454 g | 16.01 oz | 479.7 g |
| 3 cups | 681 g | 24.02 oz | 719.6 g |
| 4 cups | 908 g | 32.03 oz | 959.5 g |
Grams of butter to cups
| Grams | US cups (decimal) | US cups (nearest 1/8) | Metric cups (250 ml) |
|---|---|---|---|
| 25 g | 0.11 | 1/8 | 0.1 |
| 50 g | 0.22 | 1/4 | 0.21 |
| 100 g | 0.44 | 1/2 | 0.42 |
| 125 g | 0.55 | 1/2 | 0.52 |
| 150 g | 0.66 | 2/3 | 0.63 |
| 200 g | 0.88 | 7/8 | 0.83 |
| 250 g | 1.1 | 1 1/8 | 1.04 |
| 300 g | 1.32 | 1 1/3 | 1.25 |
| 400 g | 1.76 | 1 3/4 | 1.67 |
| 500 g | 2.2 | 2 1/4 | 2.08 |
| 1,000 g | 4.41 | 4 3/8 | 4.17 |
US cup, metric cup and spoons
One US cup of butter at our default weight is 227 g. A 250 ml metric cup, used in Australia, New Zealand, Canada and many metric recipes, holds the same volume plus 5.7%, which is 240 g. A US legal (nutrition label) cup of 240 ml is 230 g. These all assume the same packing as the US cup; read about it on US cup vs metric cup.
| Spoon | Grams |
|---|---|
| 1 tablespoon (15 ml) | 14.2 g |
| 1 teaspoon (5 ml) | 4.7 g |
| 1 Australian tablespoon (20 ml) | 19.2 g |
Sources and when they were checked
- USDA FoodData Central, SR Legacy (April 2018 release), food Butter, salted (FDC ID 173410). Gram weights per household measure as published; per-cup figures where USDA lists a different amount (such as 2 tablespoons) are scaled.
- King Arthur Baking, Ingredient Weight Chart, row(s): Butter. Chart rows that list a quarter cup, half cup or tablespoon are scaled to a full cup on this page; the original listing is shown in the table above.
- Cup volumes: the US customary cup is exactly 236.5882365 ml; the US nutrition-label cup is defined in US law as 240 ml (21 CFR 101.9); the metric cup is 250 ml (see US cup vs metric cup).
Last checked 27 October 2026. Weights are for reference: ingredients vary by brand, humidity and how they are packed. If your recipe gives gram weights, use those.
Frequently asked questions
How many grams is 1 cup of butter?
1 US cup of butter is 227 g by our default (USDA). USDA lists 227 g and King Arthur lists 226 g. A 250 ml metric cup holds about 240 g.
How many grams is 1/2 cup of butter?
1/2 US cup of butter is 113.5 g (4 oz). In a metric cup it is 119.9 g.
How many grams is 1/4 cup of butter?
1/4 US cup of butter is 56.8 g (2 oz).
How many cups is 100 g of butter?
100 g of butter is 0.44 US cups (about 1/2 cups), or 0.42 metric cups.
How many cups is 500 g of butter?
500 g of butter is 2.2 US cups, or 2.08 metric cups.
How many grams is 1 stick of butter?
One US stick is half a cup, which is 113 g (4 oz), or 8 tablespoons at about 14.2 g each.
How many grams is 1 cup of butter in the UK?
The 1 US cup figure is 227 g. A metric cup of 250 ml of butter would be about 240 g. UK butter is usually sold in 250 g blocks, which is slightly more than one US cup.