Yeast Conversion — Active Dry, Instant & Fresh Yeast
~30 seconds
Enter an amount of yeast and pick the types to convert between. Active dry and instant substitute 1:1 by weight. Fresh/compressed (cake) yeast uses a manufacturer convention (~2.7× by weight) — labeled approximate because it is a manufacturer convention, not a chemical constant. These are conventions, not chemical constants.
What this calculator determines
It converts a yeast weight between active dry, instant, and fresh/compressed types using a 1:1 ratio for dry types and an approximate 2.7× ratio for fresh.
Related calculators
Examples
7 g active dry → fresh
7 g active dry → fresh/compressed
Calculation
- Fresh ≈ dry × 2.7 (Red Star convention, approximate)
- 7 × 2.7 = 18.9 g
≈ 18.9 g fresh cake yeast
7 g active dry → instant
7 g active dry → instant
Calculation
- Active dry ↔ instant = 1:1 by weight
- 7 × 1.0 = 7 g
7 g instant yeast
Assumptions & Conventions
- Active dry↔instant is 1:1 by weight
- Active dry and instant yeast substitute 1:1 by weight (Red Star convention); the result is presented as exact.
- Dry↔fresh is approximate
- Fresh/compressed yeast uses a manufacturer convention of about 2.7× by weight (~18.9 g fresh ≈ 7 g dry); the result is labeled approximate, not a chemical constant.