Convert Baking Powder from Ounces to Cup

How many cups is 1 ounce of baking powder?

1 ounce of baking powder is 0.14 cups. 2 ounces of baking powder is 0.28 cups. 1/2 ounce of baking powder is 0.07 cups. 1/4 ounce (0.25 ounce) of baking powder is 0.04 cups. 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 →

Baking powder is a leavening agent commonly used in baking to help dough and batter rise. It typically consists of a combination of an acid (like cream of tartar), a base (like baking soda), and a moisture absorber (like cornstarch). When mixed with wet ingredients, it produces carbon dioxide gas, which creates bubbles that cause the mixture to expand and become light and fluffy.

Baking powder is used in small amounts (usually 1–2 teaspoons per recipe) and even a slight excess can make baked goods taste bitter or collapse after rising. Measuring by weight is the most reliable way to get it right. Use the converter below for grams, cups, teaspoons, and more.

Baking Powder Calculator

Don't have self-raising flour? Use our calculator to make it from scratch.

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Baking soda (bicarb) is the pure alkali inside baking powder, with no built-in acid, so it is roughly three times stronger. They are not a 1:1 swap: to replace baking powder with baking soda you need to add an acid such as cream of tartar, and use about a third of the amount. See our Baking Soda (Bicarb) converter.

Cream of tartar is the dry acid inside baking powder. Use the cream of tartar converter for teaspoon and gram conversions when pairing it with baking soda. See our Cream of Tartar converter.

Out of baking powder? See baking powder substitutes →

No scale? The tool below gives a good estimate, but for exact bakes a digital kitchen scale removes the guesswork.

Baking Powder Measurement Converter

Enter a value and pick your units.

Result

0 Cup

Common Baking Powder Conversions

Here are the most common baking powder conversions from ounces to cups.

OuncesCups
1 oz0.14 cups
2 oz0.28 cups
3 oz0.43 cups
4 oz0.57 cups
5 oz0.71 cups
6 oz0.85 cups
8 oz1.13 cups
10 oz1.42 cups
12 oz1.7 cups

Baking Powder Conversion Chart

The conversion chart below gives a quick reference for converting baking powder from Ounces to Cup and other measurements.

ouncescupgramscup(US)tbsptsp
2.5 oz0.35 cup70.92 g0.37 cup (US)5.91 tbsp17.73 tsp
5 oz0.71 cup141.84 g0.74 cup (US)11.82 tbsp35.46 tsp
7.5 oz1.06 cup212.77 g1.11 cup (US)17.73 tbsp53.19 tsp
10 oz1.42 cup283.69 g1.48 cup (US)23.64 tbsp70.92 tsp

Frequently Asked Questions

How many cups is 1 ounce of baking powder?
1 ounce of baking powder is 0.14 cups. The ratio is fixed, so 2 ounces of baking powder is 0.28 cups and 0.5 ounces is 0.07 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 baking powder converter
How many cups is 1.5 ounces of baking powder?
1.5 ounces of baking powder is 0.21 cups. The ratio is fixed, so 1 ounce of baking powder is 0.14 cups and 2 ounces is 0.28 cups. Type any other amount into the converter above for the exact figure, or use the chart below for the common ones.
How many cups is 2 ounces of baking powder?
2 ounces of baking powder is 0.28 cups. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 ounce of baking powder is 0.14 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 cups reading.
How many ounces of baking powder is 0.14 cups?
0.14 cups of baking powder is 0.99 ounces. The conversion works the same in reverse, so you can switch between cups and ounces without changing the result. This helps when a recipe lists ounces but you would rather weigh or measure in cups. The converter above and the chart below cover both directions for any amount.
How many cups is 1/2 ounce of baking powder?
1/2 ounce of baking powder is 0.07 cups. The ratio is fixed, so 1 ounce of baking powder is 0.14 cups and 2 ounces is 0.28 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 below for the common ones.
How many cups is 1/4 ounce of baking powder?
1/4 ounce (0.25 ounce) of baking powder is 0.04 cups. The ratio is fixed, so 1 ounce of baking powder is 0.14 cups and 2 ounces is 0.28 cups. Quarter amounts often come up when scaling a recipe down step by step, and the figure divides cleanly. Use the converter above for any other quantity, or the chart below for the most common amounts.

Other Ingredients

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