Ingredient Guide
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Cream of Tartar ingredient guide →1 cup of Cream of Tartar in ounces
1 cup of cream of tartar = 5.8 ounces. That's based on a 162 g per cup baseline. Because cream of tartar can shift with brand and measuring style, weighing is usually more accurate than measuring by volume.
Answer
5.8 ounces
Based on cream of tartar density of 0.69 g/ml
Sources: King Arthur Baking, USDA FoodData Central
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Find a substitute →How many cups is 8 oz, 16 oz, or 32 oz of cream of tartar?
Packages of cream of tartar are usually labeled by weight. These are weight ounces converted at 162 g per cup — not fluid ounces.
| Package size | US cups |
|---|---|
| 4 oz | 0.69 cups |
| 8 oz | 1.4 cups |
| 12 oz | 2.1 cups |
| 16 oz | 2.8 cups |
| 24 oz | 4.2 cups |
| 32 oz | 5.6 cups |
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Substitute Path
Cream of Tartar substitutions
Start with Lemon Juice using 2 teaspoons lemon juice per 1 teaspoon cream of tartar, then see the full substitute hub for more tested options.
Open Cream of Tartar substitutions →Recipe Context
Cream of Tartar substitute for cookies
Jump straight to the recipe-specific page for ratios and adjustment notes in cookies.
Cream of Tartar substitute for cookies →Quick Reference Table
| cups | ounces |
|---|---|
| 1/4 cups | 1.4 ounces |
| 1/3 cups | 1.9 ounces |
| 1/2 cups | 2.9 ounces |
| 1 cups | 5.8 ounces |
| 1.50 cups | 8.6 ounces |
| 2 cups | 11.5 ounces |
| 3 cups | 17.3 ounces |
| 4 cups | 23.0 ounces |
Figures use the US cup (236.6 ml).
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Ingredient-specific, density-based conversions for baking
1 cups of Cream of Tartar equals 5.8 ounces
Ingredient-specific · density-based
Cup size
Based on us cup (236.6 ml) · density data from baking references and our own measurements.Advertisement
Why this conversion varies
Cream of Tartar can vary by brand and measuring style.
- Cream of Tartar may settle, compress, or pour differently based on handling.
- cream of tartar can shift with temperature and ingredient texture.
- This page uses a consistent 162 g per cup baseline for repeatable conversions.
Why this conversion matters
Cream of Tartar can behave differently by brand and handling. Converting cream of tartar with a consistent baseline gives you a more dependable starting point for scaling recipes.
Practical baking use
Acidic white powder used to stabilize egg whites, prevent sugar crystallization, and activate baking soda. Use this conversion as a practical starting point for scaling recipes with cream of tartar.
- If consistency matters, verify with a small test batch first.
- Use weight-based measurements when precision is critical.
FAQ
How much is 1 cup of cream of tartar in ounces?
1 cup of cream of tartar is 5.8 ounces using a 162 g per cup baseline.
Is 8 oz of cream of tartar the same as 1 cup?
1.4 cups — 8 oz by weight of cream of tartar is not 1 US cup. A cup of cream of tartar weighs 162 g (5.8 oz). Ounces on this page are weight, not fluid ounces — the "8 oz = 1 cup" rule only holds for water-like liquids.
Is it better to weigh cream of tartar for baking?
Usually yes. Weight-based measuring reduces shifts from brand and measuring style, so your results are more repeatable.
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Recipe Context for Cream of Tartar
For chemical leavening: small weight changes alter rise and browning.
For quick breads: over-leavening can cause collapse after oven spring.
For cookies: balance leavening with acid source for predictable spread.
Common Pitfalls
- Switching brands without re-checking weight can change texture and bake time.
- Using volume-only measurements for dense ingredients can overshoot recipe targets.
- Expired leaveners can underperform even when measured correctly.
Brand Variance Example
Baseline on this page: 1 cup cream of tartar = 162g. Real-world range can shift by about 6% because fine powders and leaveners settle during storage, changing cup density.
Example for 2 cups: baseline 324g, common range 304g-344g. If your bake is texture-sensitive, start with the lower bound and adjust after a test batch.
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