Instant Yeast — Grams & Cups Converter
1 cup of instant yeast (also called fast-action yeast) weighs about 149 g. So 100 g ≈ 2/3 cup, 200 g ≈ 1 1/3 cups, and 300 g ≈ 2 cups. Convert any amount between grams, cups, ounces, tablespoons and millilitres with the calculator below.
💡 Tip: Instant yeast mixes straight into dry ingredients with no blooming and is slightly stronger than active dry, so you can use a touch less.
Cups to grams chart for instant yeast
| Cups | Grams | Ounces |
|---|---|---|
| 1/4 | 37.3 | 1.31 |
| 1/3 | 49.7 | 1.75 |
| 1/2 | 74.5 | 2.63 |
| 2/3 | 99.3 | 3.5 |
| 3/4 | 112 | 3.94 |
| 1 | 149 | 5.26 |
| 1 1/2 | 224 | 7.88 |
| 2 | 298 | 10.5 |
| 3 | 447 | 15.8 |
Grams to cups chart for instant yeast
| Grams | Cups | Ounces |
|---|---|---|
| 10 | 1/8 | 0.35 |
| 25 | 1/8 | 0.88 |
| 50 | 1/3 | 1.76 |
| 75 | 1/2 | 2.65 |
| 100 | 2/3 | 3.53 |
| 125 | 7/8 | 4.41 |
| 150 | 1 | 5.29 |
| 200 | 1 1/3 | 7.05 |
| 250 | 1 2/3 | 8.82 |
| 300 | 2 | 10.6 |
| 500 | 3 3/8 | 17.6 |
Spoon reference: 1 tablespoon ≈ 9.31 g, 1 teaspoon ≈ 3.1 g.
Instant yeast: no proofing needed
Instant yeast weighs the same as active dry — a 7 g packet is 2¼ teaspoons, about 3.1 g per teaspoon — but its finer granules let you mix it straight into the flour with no proofing step. It's also sold as fast-action or rapid-rise yeast; they're all the same thing.
Because it starts working faster, keep an eye on the rise and don't over-prove the dough.
Frequently asked questions
- How many grams is 1 cup of instant yeast?
- 1 US cup of instant yeast weighs about 149 grams (5.26 ounces).
- How many cups is 100g of instant yeast?
- 100 grams of instant yeast is about 2/3 cup.
- How many cups is 200g of instant yeast?
- 200 grams of instant yeast is about 1 1/3 cups.
- How many cups is 250g of instant yeast?
- 250 grams of instant yeast is about 1 2/3 cups.
- How many cups is 300g of instant yeast?
- 300 grams of instant yeast is about 2 cups.
- How many cups is 500g of instant yeast?
- 500 grams of instant yeast is about 3 3/8 cups.
- How many grams is ½ cup of instant yeast?
- Half a US cup of instant yeast is about 74.5 grams.
- How much does 1 cup of instant yeast weigh?
- 1 cup of instant yeast weighs about 149 grams, or roughly 5.26 ounces.
- How many grams in a tablespoon of instant yeast?
- About 9.31 grams per tablespoon (and roughly 3.1 g per teaspoon).
- Why do my numbers differ slightly?
- Density changes with how the instant yeast is packed, sifted or measured. For precise baking, weigh with a scale instead of using cups.
- How many grams is a packet of instant yeast?
- 7 g, the same 2¼ teaspoons as active dry yeast.
- Is instant yeast the same as fast-action yeast?
- Yes — instant, fast-action and rapid-rise are the same type; mix it straight into the flour with no proofing.
- Can I use instant yeast instead of active dry?
- Yes, 1:1. Instant works a bit faster, so watch the rise, and you can skip the proofing step.
- How much instant yeast per cup of flour?
- Roughly ½ to ¾ teaspoon per cup of flour for a standard dough.
- Do I need to dissolve instant yeast first?
- No — add it directly to the dry ingredients. That's its main advantage over active dry.