Convert Cream of Tartar from Ounces to Cup (US)

How many US cups is 1 ounce of cream of tartar?

1 ounce of cream of tartar (potassium bitartrate) is 0.15 US cups. 2 ounces of cream of tartar is 0.3 US cups. 1/2 ounce of cream of tartar is 0.07 US cups. 1/4 ounce (0.25 ounce) of cream of tartar is 0.04 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.
  • 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 →

Cream of tartar is a fine white powder left behind in wine barrels during fermentation, used in baking to stabilise egg whites, prevent sugar crystallisation, and activate baking soda. One metric cup (250 ml) of cream of tartar weighs around 200 grams or 7.05 ounces. Most recipes call for it by the teaspoon, where 1 tsp weighs about 4 grams.

Cream of tartar is potent in small amounts. Even a quarter teaspoon makes a measurable difference to a meringue. Measuring by weight avoids the over-packing that comes with scooping, keeping results consistent.

Also known as

  • potassium bitartrate
  • potassium hydrogen tartrate

Related Cream of Tartar Ingredients

Baking powder contains cream of tartar as its acid component. If a recipe uses cream of tartar and baking soda together as a leavening pair, use the baking powder converter to find the right replacement amount. See what 1 ounce of baking powder is in US cups.

Cream of tartar is often paired with baking soda to create a leavening reaction. The baking soda converter covers gram and teaspoon conversions for the other half of the duo. See what 1 ounce of baking soda (bicarb) is in US cups.

Out of cream of tartar? See cream of tartar 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 scale

Cream of Tartar Measurement Converter

Enter a value and pick your units.

Result

0.15 Cup (US)

Cream of Tartar Calculators & Baking Tools

Working with cream of tartar? These tools handle the jobs a converter cannot.

Common Cream of Tartar Conversions

Here are the most common cream of tartar conversions from ounces to cups (US).

OuncesCups (US)
1 oz0.15 cups (US)
2 oz0.3 cups (US)
3 oz0.44 cups (US)
4 oz0.59 cups (US)
5 oz0.74 cups (US)
6 oz0.89 cups (US)
8 oz1.18 cups (US)
10 oz1.48 cups (US)
12 oz1.77 cups (US)

Cream of Tartar Conversion Chart

The conversion chart below gives a quick reference for converting cream of tartar from Ounces to Cup (US) and other measurements.

ouncescup(US)cupgramstbsptsppinch
2.5 oz0.37 cup (US)0.35 cup70.92 g5.91 tbsp17.73 tsp283.69 pinch
5 oz0.74 cup (US)0.71 cup141.84 g11.82 tbsp35.46 tsp567.38 pinch
7.5 oz1.11 cup (US)1.06 cup212.77 g17.73 tbsp53.19 tsp851.06 pinch
10 oz1.48 cup (US)1.42 cup283.69 g23.64 tbsp70.92 tsp1134.75 pinch

Frequently Asked Questions

How many US cups is 1 ounce of cream of tartar?
1 ounce of cream of tartar is 0.15 US cups. The ratio is fixed, so 2 ounces of cream of tartar is 0.3 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 cream of tartar converter
How many US cups is 1.5 ounces of cream of tartar?
1.5 ounces of cream of tartar is 0.22 US cups. The ratio is fixed, so 1 ounce of cream of tartar is 0.15 US cups and 2 ounces is 0.3 US cups. Type any other amount into the converter above for the exact figure, or use the chart below for the common ones.
How many US cups is 2 ounces of cream of tartar?
2 ounces of cream of tartar is 0.3 US cups. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 ounce of cream of tartar is 0.15 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 cream of tartar is 0.15 US cups?
0.15 US cups of cream of tartar is 1.02 ounces. 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 below cover both directions for any amount.
Are cream of tartar and potassium bitartrate the same thing?
Yes. Potassium bitartrate is another name for cream of tartar, so they are the same ingredient and convert identically. 1 ounce of cream of tartar is 0.15 US cups under either name, and 2 ounces is 0.3 US cups. Recipes use the two names interchangeably, so you can follow either one without changing quantities or weighing any differently.
What is 1/2 oz cream of tartar in US cups?
1/2 ounce of cream of tartar is 0.07 US cups. The ratio is fixed, so 1 ounce of cream of tartar is 0.15 US cups and 2 ounces is 0.3 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 below for the common ones.
What is 1/4 oz cream of tartar in US cups?
1/4 ounce (0.25 ounce) of cream of tartar is 0.04 US cups. The ratio is fixed, so 1 ounce of cream of tartar is 0.15 US cups and 2 ounces is 0.3 US 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

If you need help with any other ingredients click below: