Last updated October 14, 2026 · Report an error
A recipe calling for one type of yeast is easy to make with whatever's in your pantry — as long as you convert the amount correctly, since active dry, instant, and fresh yeast aren't used in equal quantities. This calculator converts between the three yeast types using standard published baking ratios, with a full step-by-step solution.
How it works
Select the yeast type you have and the type the recipe calls for, and enter the amount. The calculator converts through an instant-yeast-equivalent baseline, since active dry yeast needs about 25% more than instant, and fresh yeast needs roughly triple the instant amount.
- Enter convert from.
- Enter convert to.
- Enter amount (any unit — tsp, g, oz).
- Click Calculate to see your results.
Examples
Converting active dry to instant
2.25 teaspoons of active dry yeast (one standard packet) converts to about 1.8 teaspoons of instant yeast.
Who should use it
- Substituting yeast types when a recipe calls for one you don't have on hand.
- Converting a bread recipe between active dry and instant yeast measurements.
Industry applications
- Home baking
- Professional and artisan bread baking
Advantages
- Converts directly between any two of the three common yeast types.
- Uses standard, widely-published baking conversion ratios.
Limitations
- Ratios are general guidelines — brands and specific recipes can vary slightly in their recommended conversions.
Common mistakes to avoid
- Substituting yeast types 1:1 without adjusting the amount, which can significantly under- or over-proof a dough.
- Forgetting that fresh (cake) yeast has a much shorter shelf life and different handling than dried yeast types.
Best practices
- When substituting yeast types in a recipe, also check whether rise times need adjusting, since fresher or more concentrated yeast can proof faster.
Tips
- Instant yeast is generally the most convenient for home bakers since it needs no proofing step — this calculator makes it easy to convert any recipe to use it.