Leaveners, Salt & Spices
Convert ounces of cream of tartar to cups
One ounce of cream of tartar weighs about 0.197 cup, and half a ounce comes to roughly 0.098 cup. Enter any amount below to convert it, or use the chart further down as a quick reference while you cook.
1 oz of cream of tartar =
0.197 cup
About 1/4 cup in recipe notation
- ml
- 46.6
- tbsp
- 3.15
Cream of Tartar: 144 g per US cup · NIST Handbook 133. 1 teaspoon = 3 g. Usually used in fractions of a teaspoon, so a scale that reads 0.1 g helps.
Full cream of tartar chart →Cream of Tartar at a glance
Every number on this page comes from a single figure: 144 grams per US cup (NIST Handbook 133).
- 1 cup
- 144 g
- 1 tablespoon
- 9 g
- 1 teaspoon
- 3 g
- 1 cup in ounces
- 5.08 oz
- 100 g in cups
- 0.694 cups
- Density
- 0.61 g/ml
ounces to cups chart for cream of tartar
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 | 0.098 cup | 1.57 tbsp | 23.3 ml |
| 1 oz | 0.197 cup | 3.15 tbsp | 46.6 ml |
| 2 oz | 0.394 cup | 6.3 tbsp | 93.2 ml |
| 3 oz | 0.591 cup | 9.45 tbsp | 140 ml |
| 4 oz | 0.787 cup | 12.6 tbsp | 186 ml |
| 5 oz | 0.984 cup | 15.7 tbsp | 233 ml |
| 6 oz | 1.18 cup | 18.9 tbsp | 279 ml |
| 8 oz | 1.57 cup | 25.2 tbsp | 373 ml |
| 12 oz | 2.36 cup | 37.8 tbsp | 559 ml |
| 16 oz | 3.15 cup | 50.4 tbsp | 745 ml |
How this conversion is calculated
Volume-to-weight conversions are only as good as the density behind them. We treat cream of tartar as 144 g per US customary cup, which works out to 0.609 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 2/3 cups.
Measuring cream of tartar accurately
1 teaspoon = 3 g. Usually used in fractions of a teaspoon, so a scale that reads 0.1 g helps.
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 cream of tartar?
1 ounce of cream of tartar is 0.197 cup. This is based on a density of 144 g per US cup.
How many cups are in 2 ounces of cream of tartar?
2 ounces of cream of tartar is 0.394 cup, and 0.098 cup for half a ounce.
How much is 100 g of cream of tartar in cups?
100 g of cream of tartar is about 2/3 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 cream of tartar?
1 teaspoon = 3 g. Usually used in fractions of a teaspoon, so a scale that reads 0.1 g helps.
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.