Yeast Converter
Convert between active dry yeast, instant yeast, and fresh yeast. Enter your amount in teaspoons, grams, or packets to instantly see the equivalent in all three yeast types.
I have (yeast type)
Active Dry Yeast
tsp
2.25
grams
6.98g
packets (¼ oz)
1
Instant / Fast-Acting Yeast
tsp
1.69
grams
5.06g
packets (¼ oz)
0.75
Fresh Yeast
tsp
5.06
grams
17.21g
Standard Packet Equivalents
Types of yeast and how to substitute them
All three common types of yeast — active dry, instant, and fresh — contain the same organism (Saccharomyces cerevisiae) and perform the same function in bread dough. They differ in moisture content and granule size, which affects how they are used and how potent they are by weight.
Active dry yeast vs instant yeast
Active dry yeast has larger granules and a protective coating; it traditionally needs to be dissolved (proofed) in warm water before use, though modern active dry yeast can often be added directly. Instant yeast (also called fast-acting or rapid-rise yeast) has finer particles and absorbs water faster — it can be mixed directly into dry ingredients. Instant yeast is more potent: use about ¾ of the amount of active dry yeast called for.
What is fresh yeast?
Fresh yeast (also called cake yeast or compressed yeast) is sold as moist blocks and has a short shelf life (2–3 weeks refrigerated). It is highly perishable but prized by professional bakers for its reliable performance. Fresh yeast is much less concentrated — you need about 2.25 times as much fresh yeast as active dry yeast by volume. It is rarely available in supermarkets but can be found at some bakeries.
How much yeast is in one packet?
A standard US packet of yeast (both active dry and instant) contains 2¼ teaspoons = 7 grams = ¼ oz. This amount is designed to leaven approximately 3–4 cups of flour. One packet is used as the standard measurement in most North American bread recipes.
