Yeast Converter

Enter the amount and choose how it is measured.

Select the yeast type used by the original recipe and the type you have available.

The converter shows the target amount in grams. Dry-yeast results also include packets and teaspoons, while fresh-yeast results include weight ounces.

Use grams when possible because weighing is more repeatable than filling a spoon.

The calculator treats one standard dry-yeast packet as 7 grams or approximately 2.25 teaspoons.

A 7-gram packet converts mathematically to approximately 0.247 avoirdupois ounce. Packaging commonly rounds the ounce declaration to one-quarter ounce.

Specialised products can use another packet size, so check the printed net weight.

For ordinary hand- or mixer-made dough, current King Arthur Baking and Red Star guidance allows active dry and instant yeast to be substituted 1:1.

The amount may remain the same, but instant yeast can begin fermenting faster and active dry yeast can take longer to reach the same rise.

Bread-machine programs, rapid-rise products, and package-specific recipes can require a different amount or method. Follow their directions when provided.

Fresh yeast is also called cake yeast or compressed yeast.

This calculator uses a practical home-baking estimate in which active dry or instant yeast is fresh yeast multiplied by 0.33. The reverse conversion divides dry yeast by the same factor.

Fresh-yeast ratios are not universal. Baking references and manufacturers publish different equivalents based on yeast type, product, cake size, and recipe method.

Use the recipe or manufacturer ratio when one is supplied, especially for commercial formulas, bread machines, rapid-rise products, or an old recipe that names a cake without giving its weight.

The live converter supports active dry, instant, and fresh or cake yeast.

Rapid-rise and bread-machine yeast are often instant-style products, but their intended rise method can differ. Use Instant yeast for quantity comparison, then follow the package directions.

Sourdough starter is not a direct yeast measurement because it also contributes flour, water, acidity, and a different fermentation schedule.

Packets and teaspoons are convenient for common household recipes.

A small scale is more useful for partial packets, long fermentation, large batches, and recipes requiring only a small yeast quantity.

The calculator derives teaspoons from the common 7-gram and 2.25-teaspoon packet convention. It is not a laboratory density measurement.

The calculator does not determine how much yeast a dough needs.

The appropriate amount also depends on flour weight, dough temperature, fermentation time, sugar, salt, fat, and the recipe method.

It does not test yeast activity or predict rise time.

The calculation runs entirely in the browser.

The entered quantity and selected yeast types are not uploaded, added to the page URL, or permanently stored.