Fats & Oils
Convert cups of butter to ounces
One cup of butter weighs about 8.01 oz, and half a cup comes to roughly 4 oz. Enter any amount below to convert it, or use the chart further down as a quick reference while you cook.
1 cup of butter =
8.01 oz
- kg
- 0.227
- lb
- 0.5
Butter: 227 g per US cup · USDA FoodData Central. One US cup of butter is 2 sticks = 227 g = 8 oz. European blocks are usually 250 g, which is 1 cup plus 1 tablespoon.
Full butter chart →Butter at a glance
Every number on this page comes from a single figure: 227 grams per US cup (USDA FoodData Central).
- 1 cup
- 227 g
- 1 tablespoon
- 14.2 g
- 1 teaspoon
- 4.73 g
- 1 cup in ounces
- 8.01 oz
- 100 g in cups
- 0.441 cups
- Density
- 0.96 g/ml
cups to ounces chart for butter
Print it, screenshot it, or bookmark this page — these are the amounts recipes ask for most often.
| Cups (US) | Grams | Ounces (weight) | Pounds |
|---|---|---|---|
| 1/8 cup | 28.4 g | 1 oz | 0.063 lb |
| 1/4 cup | 56.8 g | 2 oz | 0.125 lb |
| 1/3 cup | 75.7 g | 2.67 oz | 0.167 lb |
| 1/2 cup | 114 g | 4 oz | 0.25 lb |
| 2/3 cup | 151 g | 5.34 oz | 0.334 lb |
| 3/4 cup | 170 g | 6.01 oz | 0.375 lb |
| 1 cup | 227 g | 8.01 oz | 0.5 lb |
| 1 1/2 cup | 341 g | 12 oz | 0.751 lb |
| 2 cup | 454 g | 16 oz | 1 lb |
| 3 cup | 681 g | 24 oz | 1.5 lb |
| 4 cup | 908 g | 32 oz | 2 lb |
How this conversion is calculated
Volume-to-weight conversions are only as good as the density behind them. We treat butter as 227 g per US customary cup, which works out to 0.959 g/ml. From there:
- Your cups figure is converted into millilitres or grams using standard unit sizes (cup = 237 ml).
- The density above bridges volume and weight in whichever direction you need.
- The result is rounded the way a cook would round it — to the nearest gram, or to a usable fraction such as 1/2 cups.
Measuring butter accurately
One US cup of butter is 2 sticks = 227 g = 8 oz. European blocks are usually 250 g, which is 1 cup plus 1 tablespoon.
If a recipe matters to you — bread, macarons, anything with a tight hydration or ratio — weigh it. A £10 digital scale removes the single largest source of variation in home baking, and it is faster than washing three measuring cups.
When cups are fine
- Liquids measured in a proper jug, where volume is the honest unit anyway.
- Forgiving savoury cooking: soups, stews, stir-fries, marinades.
- Small amounts of leaveners and spices, as long as you use level spoons.
Frequently asked questions
How many ounces are in 1 cup of butter?
1 cup of butter is 8.01 oz. This is based on a density of 227 g per US cup.
How many ounces are in 2 cups of butter?
2 cups of butter is 16 oz, and 4 oz for half a cup.
How much is 100 g of butter in cups?
100 g of butter is about 1/2 cups. Weight is always the more reliable measurement, so use a scale when the recipe gives grams.
Why do other sites give a different number for butter?
One US cup of butter is 2 sticks = 227 g = 8 oz. European blocks are usually 250 g, which is 1 cup plus 1 tablespoon.
Do UK and Australian cups give the same result?
No. A US customary cup is 236.6 ml, a metric cup used in Australia and New Zealand is 250 ml, and an old UK imperial cup is 284 ml. Our default is the US cup, but you can pick metric cups in the converter.