Yeast Converter

Convert Between Yeast Types

This yeast converter swaps active dry, instant, compressed fresh, and brewers yeast using standard substitution ratios. Enter an amount in teaspoons, tablespoons, grams, or ounces and get the equivalent weight or volume in another yeast form. Pair it with the Sourdough Calculator, Self Rising Flour Calculator, and Priming Sugar Calculator when you scale bread, pizza, or brewing recipes.

Common Yeast Substitution Ratios

Ratios are expressed relative to active dry yeast. Instant yeast is more concentrated, so you need less by weight. Fresh compressed yeast is less concentrated, so you need more. Brewers yeast is used differently but can be converted for reference when comparing recipes.

$$\text{target amount} = \text{source amount} \times \dfrac{\text{active dry factor for source}}{\text{active dry factor for target}}$$

When to Adjust Yeast in Recipes

Substitution ratios assume similar fermentation conditions. Very cold dough, high sugar, or long rises may need slightly more yeast. Fast bakes or warm kitchens may need less. Always watch dough activity rather than relying only on a straight swap.