Instant yeast, Cups to Grams & Grams to Cups
1 cup of instant yeast = 150 grams · 100g = 0.67 cups
Instant (rapid-rise) yeast is sold in small amounts but packs densely, at about 150 grams per cup; in practice you measure it by the teaspoon or packet. One standard packet is 7 grams, or about 2¼ teaspoons. Unlike active dry yeast, instant yeast can be mixed straight into the flour without proofing.
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Instant yeast cups to grams table
| Cups | Grams | Ounces | Tablespoons |
|---|---|---|---|
| 1/8 | 18.8 g | 0.66 oz | 2 |
| 1/4 | 37.5 g | 1.32 oz | 4 |
| 1/3 | 50 g | 1.76 oz | 5.33 |
| 1/2 | 75 g | 2.65 oz | 8 |
| 2/3 | 100 g | 3.53 oz | 10.7 |
| 3/4 | 112 g | 3.97 oz | 12 |
| 1 | 150 g | 5.29 oz | 16 |
| 1 1/2 | 225 g | 7.94 oz | 24 |
| 2 | 300 g | 10.6 oz | 32 |
| 3 | 450 g | 15.9 oz | 48 |
Instant yeast grams to cups table
Working the other way? Here's how many cups common gram weights of instant yeast come to, handy when a recipe lists instant yeast in grams but you only have cup measures.
| Grams | Cups | Ounces | Tablespoons |
|---|---|---|---|
| 25 g | 0.17 | 0.88 oz | 2.67 |
| 50 g | 0.33 | 1.76 oz | 5.33 |
| 75 g | 0.5 | 2.65 oz | 8 |
| 100 g | 0.67 | 3.53 oz | 10.7 |
| 125 g | 0.83 | 4.41 oz | 13.3 |
| 150 g | 1 | 5.29 oz | 16 |
| 175 g | 1.17 | 6.17 oz | 18.7 |
| 200 g | 1.33 | 7.05 oz | 21.3 |
| 225 g | 1.5 | 7.94 oz | 24 |
| 250 g | 1.67 | 8.82 oz | 26.7 |
| 300 g | 2 | 10.6 oz | 32 |
| 350 g | 2.33 | 12.3 oz | 37.3 |
| 400 g | 2.67 | 14.1 oz | 42.7 |
| 500 g | 3.33 | 17.6 oz | 53.3 |
Instant yeast: US, metric & UK cups compared
A “cup” isn’t the same size everywhere, so 1 cup of instant yeast weighs a different number of grams depending on which cup your recipe uses. The US cup is 236.6 ml, while Australia, New Zealand, Canada and modern UK recipes use a 250 ml metric cup. Here’s 1 cup of instant yeast in each:
| Cup standard | Size | 1 cup instant yeast | Used in |
|---|---|---|---|
| US cup | 237 ml | 150 g | United States (most US recipe sites) |
| Metric cup | 250 ml | 159 g | Australia, NZ, Canada & modern UK |
| UK imperial cup | 284 ml | 180 g | Older British recipes |
| Japanese cup | 200 ml | 127 g | Japan |
Unless a recipe says otherwise, US recipes mean the US cup and Australian/UK recipes mean the 250 ml metric cup. The tables higher up this page use the US cup.
Related ingredients
Quick reference: Instant yeast in grams
- ⅛ cup instant yeast = 18.8g
- ¼ cup instant yeast = 37.5g
- ⅓ cup instant yeast = 50g
- ½ cup instant yeast = 75g
- ⅔ cup instant yeast = 100g
- ¾ cup instant yeast = 112g
- 1 cup instant yeast = 150g
- 2 cups instant yeast = 300g
How many cups is 100g, 200g or 300g of instant yeast?
Because one cup of instant yeast weighs about 150 grams, you can convert any weight to cups by dividing by 150. So 100g of instant yeast is about 0.67 cups, 200g is about 1.33 cups, 250g is about 1.67 cups, and 300g is about 2 cups. For any other amount, type the grams straight into the converter above and switch it to show cups.
How to measure instant yeast accurately
For the most reliable baking results, weigh instant yeast on a kitchen scale rather than scooping by volume. One US cup of instant yeast weighs about 150 grams (5.29 oz), but the exact figure changes with how tightly it's packed and the brand. Scooping straight from the bag compacts instant yeast and can leave you 15 to 20% over, so spoon it into the cup and level it off for the closest match to the figures above. Use the tables for quick reference, or the converter for any custom amount in cups, grams, ounces or tablespoons.
Tip: One packet of yeast equals 2¼ teaspoons (7g). Instant yeast needs no blooming — stir it right into the dry ingredients.
Instant yeast conversions: common questions
How many teaspoons are in a packet of yeast?
A standard 7g packet of yeast holds about 2¼ teaspoons.
How many grams are in a cup of instant yeast?
One US cup of instant yeast weighs approximately 150 grams (5.29 oz).
How many grams in half a cup of instant yeast?
Half a cup (½ cup) of instant yeast weighs approximately 75 grams.
How many grams in a quarter cup of instant yeast?
A quarter cup (¼ cup) of instant yeast weighs approximately 37.5 grams.
How do I convert instant yeast from cups to grams?
Multiply the number of cups by 150. For example, 2 cups of instant yeast = 300 grams, and ¾ cup = 112 grams.
How many cups is 100g of instant yeast?
100 grams of instant yeast is about 0.67 cups. 200g is about 1.33 cups and 300g is about 2 cups, since 1 cup weighs 150 grams.
How many grams in a metric (Australian) cup of instant yeast?
One 250 ml metric cup of instant yeast, used in Australia, New Zealand, Canada and modern UK recipes, weighs about 159 grams, compared with 150 grams for a 236.6 ml US cup.