Grams to Cups: Instant Yeast
If your recipe is written in cups but your scale reads grams — or the other way round — this page solves the conversion for instant yeast. One cup of instant yeast weighs about 150 grams, which works out to a density of 0.63 g/ml. From there, half a cup is roughly 75 g, a quarter cup about 38 g, and one tablespoon about 9 g.
Converting between weight and volume depends on density, and density is specific to each ingredient: a cup of instant yeast does not weigh the same as a cup of flour or sugar. That is why this tool uses the measured density of instant yeast rather than a one-size-fits-all figure.
Cooking measurement converter — Instant Yeast
Result
0.667 cups
Common measures — Instant Yeast
| Measure | Grams |
|---|---|
| 1 cup | 150 g |
| ¾ cup | 113 g |
| ½ cup | 75 g |
| ⅓ cup | 50 g |
| ¼ cup | 38 g |
| 1 tbsp | 9.4 g |
| 1 tsp | 3.1 g |
Data source: USDA FoodData Central / manual
How to measure instant yeast accurately
For instant yeast, spoon it into the cup and level it off; do not shake or tap the cup, which settles the contents and changes the weight. Weighing in grams is still the most reliable method when the amount matters.
Frequently asked questions
How many grams are in a cup of instant yeast?
One cup of instant yeast weighs about 150 grams. Half a cup is roughly 75 grams and a quarter cup about 38 grams.
How many cups is 100 grams of instant yeast?
100 grams of instant yeast is about 0.67 cups. Use the calculator above for any other amount.
Where does this value come from?
From the ingredient's measured density (0.63 g/ml), based on established baking references. Bear in mind the real weight can vary slightly with brand and moisture.
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