Convert a yeast amount between fresh, instant and active dry.
Yeast types differ in water content and strength, so converting through an instant-yeast baseline gives the right weight. Using the wrong yeast weight under-ferments or over-proofs the dough, so conversion keeps the rise predictable.
Yeast Substitution
Convert to instant, then to target: fresh = 3x, active dry = 1.33x instant
Convert to instant, then to target: fresh = 3x, active dry = 1.33x instant Yeast types differ in water content and strength, so converting through an instant-yeast baseline gives the right weight.
Using the wrong yeast weight under-ferments or over-proofs the dough, so conversion keeps the rise predictable.
This calculator takes 3 inputs: Yeast amount, From type, To type. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.