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Convert fresh yeast to dried yeast
Dried yeast is about three times as strong as fresh yeast: 21 g of fresh yeast equals one 7 g sachet of fast-action dried yeast, 42 g equals two sachets. That raises about 500 g and 1 kg of flour.
That equals
14 g dried yeast
instead of 1 block(s) of fresh yeast (42 g)
Sachets of dried yeast (7 g): 2
Fresh yeast: 42 g
Enough for flour: 1,000 g
Mix fast-action dried yeast straight into the flour; dissolve fresh yeast in lukewarm liquid.
Lukewarm means about body temperature – too hot and the yeast dies.
What does the recipe say?
The calculator asks for:
Yeast in the recipe (Block (42 g), Fresh yeast (g), Sachet (7 g), Dried yeast (g))
Amount
The calculation runs in your browser. Your details are not saved and not sent anywhere.
Yeast conversion chart
Fresh yeast to dried yeast
Fresh yeast
Dried yeast
Sachets
Enough for flour
7 g
2.3 g
0.25
150 g
10 g
3.3 g
0.5
250 g
14 g
4.7 g
0.75
350 g
21 g
7 g
1
500 g
30 g
10 g
1.5
700 g
42 g
14 g
2
1,000 g
84 g
28 g
4
2,000 g
Dried yeast to fresh yeast
Dried yeast
Fresh yeast
Blocks (42 g)
1 sachet (7 g)
21 g
0.5
2 sachets (14 g)
42 g
1
3 sachets (21 g)
63 g
1.5
4 sachets (28 g)
84 g
2
5 g
15 g
0.25
10 g
30 g
0.75
How the calculator works
Fresh yeast : dried yeast = 3 : 1 by weight. A German block of fresh yeast is 42 g, a sachet of dried yeast 7 g.
Dr. Oetker: one 42 g block of fresh yeast raises up to 1 kg of flour, one sachet of dried yeast up to 500 g. King Arthur Baking also uses a third.
Flour: 500 g per sachet of dried yeast (= 21 g fresh yeast), rounded to 50 g. Blocks and sachets rounded to the nearest quarter.
Example: The recipe says 42 g of fresh yeast:
42 g ÷ 3 = 14 g dried yeast, so 2 sachets of 7 g
Good to know
Mix fast-action dried yeast straight into the flour; dissolve fresh yeast in lukewarm liquid.
Lukewarm means about body temperature – too hot and the yeast dies.
Keep fresh yeast in the fridge; dried yeast keeps until the date on the packet.
Frequently asked questions
How much dried yeast equals 42 g of fresh yeast?
Two sachets, so 14 g of dried yeast for 42 g of fresh yeast.
How much fresh yeast for one sachet of dried yeast?
21 g of fresh yeast.
How much yeast for 500 g of flour?
One 7 g sachet of dried yeast or 21 g of fresh yeast.
Can I dissolve dried yeast too?
Yes, you can also dissolve it in lukewarm liquid. With fast-action yeast it is not needed – it goes straight into the flour.
Why do you need less dried yeast?
Dried yeast is yeast with the water removed, so a third of the weight is enough.
