Yeast Converter — Active Dry, Instant & Fresh Yeast
Enter how much yeast your recipe calls for and the type you have — the converter shows equivalent amounts in active dry, instant, and fresh compressed yeast so you can substitute freely.
Yeast type you have
tsp
Use this amount of active dry yeast
- 1
Input amount
1Already in active dry yeast teaspoons — no conversion needed - 2
Active dry equivalent
1
How does this calculator work?
Active dry to instant: multiply by 0.75 (instant is ~25% more active per tsp). Active dry to fresh: multiply grams by 3 (fresh is 70% water). 1 tsp active dry ≈ 0.75 tsp instant ≈ 9 g fresh. One US packet = 7 g / 2.25 tsp of active dry yeast.
Formula
How this is calculated
The three common baking yeasts have different water contents and leavening strengths, so they are not interchangeable by volume. Active dry yeast (ADY) contains roughly 70 % solids and must be proofed in warm water before use. Instant (rapid-rise) yeast is more finely milled and slightly more active, so you need about 25 % less of it by volume — hence the ratio of 3/4 tsp instant per teaspoon of active dry. These ratios come from King Arthur Flour and Red Star Yeast, two widely cited baking authorities.
Fresh (compressed) yeast is about 70 % water by weight, making it roughly one-third as potent per gram as active dry yeast. The converter therefore multiplies the active dry gram weight by 3 to find the fresh equivalent. One standard US packet of active dry yeast weighs 7 g and measures 2.25 tsp — the packet count is shown as a handy reference.
Ratios can vary slightly between brands and can shift depending on yeast age, water temperature, and dough hydration. Treat the results as close estimates — within 10–15 % of exact — and adjust to taste over a few bakes.
Frequently asked questions
Yes, with two changes: use 3/4 of the active dry amount and skip proofing — instant yeast can go straight into the dry ingredients. The rise may be slightly faster, so watch your dough rather than the clock.
One standard US packet is 7 g of active dry yeast. Multiplying by 3 gives roughly 21 g (about 3/4 oz) of fresh compressed yeast as the equivalent.
Most commercial yeasts follow the 3/4:1 instant-to-active-dry ratio and the 3:1 fresh-to-dry ratio. Specialty high-activity strains may differ; always check the brand's packaging if precision matters for enriched doughs.
Also known as
TG we-Calculate Editorial Team. (2026). Yeast Converter — Active Dry, Instant & Fresh Yeast [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/yeast-converter
TG we-Calculate Editorial Team. "Yeast Converter — Active Dry, Instant & Fresh Yeast." TG we-Calculate. 2026. https://we-calculate.com/calculator/yeast-converter.
TG we-Calculate Editorial Team, "Yeast Converter — Active Dry, Instant & Fresh Yeast," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/yeast-converter
@misc{wecalculate_yeast_converter, title = {Yeast Converter — Active Dry, Instant & Fresh Yeast}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/yeast-converter}}, year = {2026}, note = {TG we-Calculate} }
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