Fats & Oils
Convert ounces of butter to cups
One ounce of butter weighs about 0.125 cup, and half a ounce comes to roughly 0.062 cup. Enter any amount below to convert it, or use the chart further down as a quick reference while you cook.
1 oz of butter =
0.125 cup
About 1/8 cup in recipe notation
- ml
- 29.5
- tbsp
- 2
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
ounces to cups chart for butter
Print it, screenshot it, or bookmark this page — these are the amounts recipes ask for most often.
| Ounces (weight) | Cups (US) | Tablespoons (US) | Millilitres |
|---|---|---|---|
| 0.5 oz | 0.062 cup | 0.999 tbsp | 14.8 ml |
| 1 oz | 0.125 cup | 2 tbsp | 29.5 ml |
| 2 oz | 0.25 cup | 4 tbsp | 59.1 ml |
| 3 oz | 0.375 cup | 5.99 tbsp | 88.6 ml |
| 4 oz | 0.5 cup | 7.99 tbsp | 118 ml |
| 5 oz | 0.624 cup | 9.99 tbsp | 148 ml |
| 6 oz | 0.749 cup | 12 tbsp | 177 ml |
| 8 oz | 0.999 cup | 16 tbsp | 236 ml |
| 12 oz | 1.5 cup | 24 tbsp | 355 ml |
| 16 oz | 2 cup | 32 tbsp | 473 ml |
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 ounces figure is converted into millilitres or grams using standard unit sizes (oz = 28.3 g).
- 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 cups are in 1 ounce of butter?
1 ounce of butter is 0.125 cup. This is based on a density of 227 g per US cup.
How many cups are in 2 ounces of butter?
2 ounces of butter is 0.25 cup, and 0.062 cup for half a ounce.
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.