Convert Butter from Ounces to Cup (US)
How many US cups is 1 ounce of butter?
1 ounce of butter (unsalted butter) is 0.13 US cups. 2 ounces of butter is 0.26 US cups. 1/2 ounce of butter is 0.07 US cups. 1/4 ounce (0.25 ounce) of butter is 0.03 US cups. Use the converter below for any amount.
- These figures use the US cup (240 ml). A metric cup is slightly larger at 250 ml, so it holds a little more. Use the metric 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 ounce of vegetable oil is in US cups.
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 ounce of olive oil is in US cups.
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 ounce of peanut butter is in US cups.
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 ounce of margarine is in US cups.
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 ounce of shortening is in US cups.
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 scale? The tool below gives a good estimate, but for exact bakes a digital kitchen scale removes the guesswork.
Weigh it exact, get a scaleButter Measurement Converter
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0.13 Cup (US)Butter 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 ounces to cups (US).
| Ounces | Cups (US) |
|---|---|
| 1 oz | 0.13 cups (US) |
| 2 oz | 0.26 cups (US) |
| 3 oz | 0.39 cups (US) |
| 4 oz | 0.52 cups (US) |
| 5 oz | 0.65 cups (US) |
| 6 oz | 0.78 cups (US) |
| 8 oz | 1.04 cups (US) |
| 10 oz | 1.3 cups (US) |
| 12 oz | 1.56 cups (US) |
For the reverse conversion, see 1 US cup of butter in ounces.
Frequently Asked Questions
- What is 1 ounce of butter in US cups?
- 1 ounce of butter is 0.13 US cups. The ratio is fixed, so 2 ounces of butter is 0.26 US cups and 0.5 ounces is 0.07 US cups. 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 US cups is 1.5 ounces of butter?
- 1.5 ounces of butter is 0.2 US cups. The ratio is fixed, so 1 ounce of butter is 0.13 US cups and 2 ounces is 0.26 US cups. Type any other amount into the converter above for the exact figure, or use the chart above for the common ones.
- What is 2 ounces of butter in US cups?
- 2 ounces of butter is 0.26 US cups. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 ounce of butter is 0.13 US cups, and you can multiply or divide that figure to match whatever your recipe needs. Enter any amount in the converter above for an exact US cups reading.
- How many ounces of butter is 0.13 US cups?
- 0.13 US cups of butter is 1 ounce. The conversion works the same in reverse, so you can switch between US cups and ounces without changing the result. This helps when a recipe lists ounces but you would rather weigh or measure in US cups. The converter above and the chart above cover both directions for any amount.
- What is 1/2 oz butter in US cups?
- 1/2 ounce of butter is 0.07 US cups. The ratio is fixed, so 1 ounce of butter is 0.13 US cups and 2 ounces is 0.26 US cups. Half measures come up often when scaling a recipe down, and the figure divides cleanly. Use the converter above for any other amount, or the chart above for the common ones.