Units & Conversions
Yeast Conversion Calculator - Convert between fresh, active dry, and instant yeast
Convert between fresh, active dry, and instant yeast
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
Frequently asked questions
Do I need to proof instant yeast?
No, instant yeast can be mixed directly with dry ingredients. Active dry should be proofed.
Can I substitute equally?
No, fresh yeast is 3x the amount of instant. Active dry is 1.2x instant.
How long does yeast last?
Instant: 2 years unopened. Active dry: 1 year. Fresh: 2-3 weeks refrigerated.
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About this tool
This Yeast Conversion Calculator turns your inputs into practical results. Provide Amount, Usage Tips, and Source Yeast Type to calculate Converted Amount and Unit.
Adjust values to compare scenarios and see how sensitive the result is. The calculation uses the numbers as entered, so double-check units and expect small differences from rounding in the displayed totals.