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Yeast Converter

Convert between fresh, active dry and instant yeast, and to a sourdough starter.

Enter values

Results update as you type.

Result

Instant yeast

7 g

Active dry yeast needs rehydrating in warm liquid first; instant can go straight into the flour.

Active dry yeast
8.75 g
Fresh yeast
21 g
In teaspoons (instant)
2.26
Sourdough starter equivalent
175 g
and expect a much longer rise
As a percentage of flour
1.4 %

About the Yeast Converter

Convert between fresh, active dry and instant yeast, and to a sourdough starter.

Also known as: fresh to dry yeast, instant yeast conversion, yeast substitution, active dry to instant.

How to use this calculator

  1. Enter amount, type you have, flour in the recipe.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

fresh = 3 × instant · active dry = 1.25 × instant

Worked example

Using the values pre-filled in the calculator above:

  • Amount = 7 g
  • Type you have: Instant / fast action
  • Flour in the recipe = 500 g

the calculator returns:

  • Instant yeast: 7 g
  • Active dry yeast: 8.75 g
  • Fresh yeast: 21 g
  • In teaspoons (instant): 2.26