Yeast Converter

Three kinds of yeast, one conversion

Baking recipes call for whichever yeast the author happened to have, but the three common types are not interchangeable one-for-one. Active dry yeast is the classic granular yeast that many recipes bloom in warm water first. Instant yeast (also sold as rapid-rise, quick-rise or bread-machine yeast) has finer particles and can be stirred straight into the flour. Fresh yeast — also called cake or compressed yeast — is moist, crumbly and mostly water, so you need far more of it by weight.

The ratios this tool uses

Because fresh yeast is roughly two-thirds water, it takes about 2.5 times as much fresh yeast to match a given amount of active dry. Instant yeast is more concentrated, so you use about 0.75 (three quarters) as much. In short: instant = active dry × 0.75, and fresh = active dry × 2.5. This converter routes every entry through an active-dry equivalent, then works out the other two so the swap stays consistent no matter which type you start from.

How to use it

1. Type the amount your recipe lists into the Amount box.
2. Pick the unit — grams, teaspoons or ounces.
3. Choose which yeast that amount refers to: active dry, instant or fresh.
4. Read the equivalent amounts in the other two yeast types below.

FAQ

Can I use instant yeast in a recipe written for active dry?

Yes. Use about three quarters of the weight, and you can usually skip the blooming step and mix it straight into the dry ingredients.

Why does fresh yeast need so much more?

Fresh cake yeast is around 70% water, so gram for gram it holds fewer live cells than the dried types — hence the 2.5× multiplier.

How many grams is a teaspoon of yeast?

This tool assumes about 3.1 g per teaspoon, which matches a typical 7 g packet holding roughly 2 1/4 teaspoons of active dry yeast.

Are these amounts exact?

No — yeast strength varies by brand and age, so treat these as close estimates. Everything is calculated in your browser and nothing is uploaded.