Yeast Conversion Calculator
Convert between fresh yeast, active dry yeast, and instant yeast amounts for any baking recipe.
Yeast Conversions
Yeast conversion is essential when your recipe calls for one type but you have another.
Conversion ratios:
- Fresh yeast → Active dry: multiply by 0.4 (use 40%)
- Fresh yeast → Instant: multiply by 0.33 (use 33%)
- Active dry → Instant: multiply by 0.75 (use 75%)
| Fresh Yeast | Active Dry | Instant |
|---|---|---|
| 7g | 2.8g (~1 tsp) | 2.3g (~3/4 tsp) |
| 14g | 5.6g (~2 tsp) | 4.7g (~1.5 tsp) |
| 21g | 8.4g (1 packet) | 7g (1 packet) |
| 42g | 16.8g (2 packets) | 14g (2 packets) |
Key differences:
- Fresh (cake) yeast: Most perishable, mildest flavor, dissolve in warm liquid
- Active dry yeast: Needs to be “proofed” (dissolved in warm water before use)
- Instant (rapid-rise) yeast: Can be mixed directly into dry ingredients, no proofing needed
Standard packet sizes:
- Active dry yeast packet: 7g (~2.25 tsp)
- Instant yeast packet: 7g (~2.25 tsp)