Convert Butter from Cup to Ounces
How many ounces is 1 cup of butter?
1 cup of butter (unsalted butter) is 8 ounces. 2 cups of butter is 16 ounces. 1/2 cup of butter is 4 ounces. 1/4 cup (0.25 cup) of butter is 2 ounces. Use the converter below for any amount.
- These figures use the metric cup (250 ml). A US cup is slightly smaller at 240 ml, so it holds a little less. Use the US cup converter →
- Cup sizes are not standard worldwide, so the same cup of an ingredient can weigh more or less depending on the country. What is a cup measurement →
Related Butter Ingredients
Vegetable oil is a pourable liquid fat that keeps bakes moist for longer than butter, though it skips butter's flavour and the air you beat in when creaming. Use roughly 7/8 cup of oil per cup of butter, and our butter to oil converter works out the exact amount. See what 1 cup of vegetable oil is in ounces.
Olive oil swaps in for melted butter in many cakes and breads, adding moisture and a savoury depth. It is lighter by cup than butter (216 g vs 227 g), so weigh when substituting and reduce the quantity slightly to avoid a greasy crumb. See what 1 cup of olive oil is in ounces.
Peanut butter swaps in for butter in cookies and no-bake bars, adding a nutty flavour and dense texture. It is heavier than butter (268 g vs 227 g per cup), so weigh when substituting and expect a richer, less flaky result. See what 1 cup of peanut butter is in ounces.
Margarine is a plant-oil spread designed to behave like butter, with a similar fat-to-water ratio and a near-identical weight (235 g vs 227 g per cup). Swap 1:1 by volume in cakes, cookies, and pastry; expect a slightly softer crumb and a less buttery flavour. See what 1 cup of margarine is in ounces.
Shortening is 100% fat, so it is richer than butter (which is around 80% fat) and lighter per cup at 205 g vs 227 g. Swap by weight in cookies and pie crust for a flakier, sturdier result; expect to lose butter's flavour and add 2 to 3 tablespoons of water per cup to compensate for the missing moisture. See what 1 cup of shortening is in ounces.
Ghee is butter with the water and milk solids cooked off, close in weight (218 g vs 227 g per cup) with a nuttier flavour and a higher smoke point. Swap 1:1 by volume; ghee browns faster. See our Ghee converter.
Out of butter? See butter substitutes →
No measuring cups? The tool below gets you close, and a measuring cup set keeps every batch the same.
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8 OuncesButter Calculators & Baking Tools
Working with butter? These tools handle the jobs a converter cannot.
- Butter to Oil Converter Convert butter to oil, or oil to butter, for any recipe.
- Pan Size Converter Rescale a recipe for a different cake tin size.
- Oven to Air Fryer Converter Match the temperature and time when you swap the oven for an air fryer, fan oven, or slow cooker.
- Recipe Scaler Scale any recipe up or down and keep every ingredient in ratio.
Common Butter Conversions
Here are the most common butter conversions from cups to ounces.
| Cups | Ounces |
|---|---|
| 0.25 cups | 2 oz |
| 0.5 cups | 4 oz |
| 0.75 cups | 6 oz |
| 1 cup | 8 oz |
| 1.25 cups | 10 oz |
| 1.5 cups | 12 oz |
| 2 cups | 16 oz |
| 2.5 cups | 20 oz |
| 3 cups | 24 oz |
For the reverse conversion, see 1 ounce of butter in cups.
Frequently Asked Questions
- What is 1 cup of butter in ounces?
- 1 cup of butter is 8 ounces. The ratio is fixed, so 2 cups of butter is 16 ounces and 0.5 cups is 4 ounces. Use the converter above for any quantity, or check the conversion chart on this page for the most common amounts at a glance. Open the butter converter
- How many ounces is 1.5 cups of butter?
- 1.5 cups of butter is 12 ounces. The ratio is fixed, so 1 cup of butter is 8 ounces and 2 cups is 16 ounces. Type any other amount into the converter above for the exact figure, or use the chart above for the common ones.
- What is 2 cups of butter in ounces?
- 2 cups of butter is 16 ounces. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 cup of butter is 8 ounces, and you can multiply or divide that figure to match whatever your recipe needs. Enter any amount in the converter above for an exact ounces reading.
- How many cups of butter is 8 ounces?
- 8 ounces of butter is 1 cup. The conversion works the same in reverse, so you can switch between ounces and cups without changing the result. This helps when a recipe lists cups but you would rather weigh or measure in ounces. The converter above and the chart above cover both directions for any amount.
- How much is 1 cup of unsalted butter in ounces?
- Unsalted butter is another name for butter, so 1 cup of unsalted butter is 8 ounces, exactly the same as butter. The figure does not change with the name: 2 cups is 16 ounces and 0.5 cups is 4 ounces. Use the converter above for any quantity, or read the conversion chart on this page for the most common amounts.