What this calculator does
Yeast type converter works out a quantity of yeast converted between active dry, instant and fresh (cake) forms. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
Formularelative potency (per unit of instant yeast): active dry = 1.5×, fresh = 3×
The inputs explained
| Field | What to enter |
|---|---|
| Amount (g) | A number, measured in g. Starts at 7. |
| Yeast type you have | Choose from Active dry, Instant, Fresh (cake). |
| Convert to | Choose from Active dry, Instant, Fresh (cake). |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with amount
Every other input is held at the calculator’s starting values while amount varies. Select any row to load that scenario into the calculator.