One-Third Cup of Active Dry Yeast in Grams
1/3 cup of active dry yeast weighs 45.33g (1.6 oz, 80ml) according to USDA FoodData Central (1 cup active dry yeast = 136g, spooned and leveled method). 1/3 cup = 0.3333 of a full cup (240ml). See the full conversion table below for all amounts from 1 tablespoon to 3 cups.
Active Dry Yeast Cup-to-Gram Conversion Table
Full range from 1 tablespoon to 3 cups. The highlighted row shows 1/3 cup.
| Amount | Grams |
|---|---|
| 1 tbsp | 8.5g |
| 2 tbsp | 17g |
| 1/8 cup | 17g |
| 1/4 cup | 34g |
| 1/3 cupthis page | 45.33g |
| 1/2 cup | 68g |
| 2/3 cup | 90.67g |
| 3/4 cup | 102g |
| 1 cup | 136g |
| 1 1/4 cups | 170g |
| 1 1/2 cups | 204g |
| 1 3/4 cups | 238g |
| 2 cups | 272g |
| 2 1/2 cups | 340g |
| 3 cups | 408g |
Source: USDA FoodData Central (FDC ID: 18375). 1 US cup = 240ml. Values use spooned-and-leveled method.
1/3 Cup of Different Ingredients — Weight Comparison
1/3 cup of different ingredients varies widely in weight because each has a different density. This matters when substituting ingredients in recipes.
| Ingredient | 1/3 Cup (g) |
|---|---|
| Active Dry Yeastcurrent | 45.33g |
| Baking Powder | 76.67g |
| Baking Soda | 76.67g |
| Cream of Tartar | 79.67g |
All values use USDA FoodData Central spooned-and-leveled method. Click any ingredient to see its full conversion table.
Measuring Active Dry Yeast Accurately
Why weight matters: 1/3 cup of active dry yeast can weigh anywhere from 39g to 54g depending on how you measure it. The USDA standard is 45.33g (spooned and leveled). Scooping directly from the container can add 10–20% extra weight, which affects recipe results — especially in baking.
About active dry yeast density: Active dry yeast: 1 packet (2.25 tsp) = 7g. Instant yeast weighs about the same per volume. 1 tablespoon = 8.5g. Yeast granules are irregular — this is an average. Standard packet is 1/4 oz = 7g.
About 1/3 Cup as a Measurement
1/3 cup = 5 tablespoons + 1 teaspoon = 80ml. This unusual fraction appears in recipes that scale for 2 servings from a 3-serving base. It cannot be made from combining standard 1/4 and 1/8 cup measures without error.
One-third cup is common in yogurt parfait recipes, small-batch granola bars, and single-layer cake recipes scaled for 2 servings. It is exactly 80ml in metric volume.
Frequently Asked Questions
How many grams is 1/3 cup of active dry yeast?
1/3 cup of active dry yeast weighs 45.33 grams (1.6 oz, 80ml). Based on USDA FoodData Central: 1 cup active dry yeast = 136g, so 1/3 cup = 136 × 0.333 = 45.33g.
Is 1/3 cup of active dry yeast the same weight every time?
The weight can vary slightly depending on measuring technique. Spooned and leveled gives 45.33g. Scooped (packed) can be 10–20% heavier. Sifted gives a lighter weight. The USDA standard (spooned and leveled) of 45.33g is the most reliable baseline for recipes.
How do I accurately measure 1/3 cup of active dry yeast?
For accuracy, use a kitchen scale and weigh 45.33g of active dry yeast. If using measuring cups, spoon the active dry yeast lightly into a 1/3 Cup measuring cup and level off the top with a straight edge. Avoid scooping directly from the container, which compacts the ingredient and adds extra weight.
How does 1/3 cup of active dry yeast compare to other ingredients?
1/3 cup of different ingredients varies significantly: Active Dry Yeast = 45.33g, Baking Powder = 76.67g, Baking Soda = 76.67g. This is because each ingredient has a different density.