Dried to Fresh Mushroom Conversion: How Much to Use
Type in a weight of dried mushrooms and you see how much fresh mushroom it replaces in a cooked dish. The tool also runs backward, so the fresh amount your recipe lists becomes a dried weight to buy and soak. Grams and ounces both work, and the ratio sits beside every answer.
Result
224 g fresh
about 7.9 oz, for 28 g dried
- Ratio
- 1 part dried for about 8 parts fresh, by weight
- Source
- Reluctant Gourmet, as a starting point for cooked dishes
- Before cooking
- Rehydrate the dried pieces in boiling water when you are ready to use them
Use dried mushrooms from a shop or ones that were properly identified before drying.
How it works
Why One Ounce Dried Stands In for Eight Fresh
The converter treats one ounce of dried mushrooms as about eight ounces of fresh, the starting ratio Reluctant Gourmet gives for soups, sauces, risotto and other cooked dishes. So 28 g of dried mushrooms does the work of about 224 g of fresh ones. When you start from a fresh amount, the same ratio runs in reverse and gives you a dried weight.
Drying takes most of a mushroom's weight away as water, and that explains the wide gap. USDA FoodData Central lists raw white mushrooms at 92.4 g of water per 100 g. When you dry mushrooms at home, that water leaves, and the same mushrooms fit into a much lighter jar.
The swap covers flavor and volume in a cooked dish, and it says nothing about texture. Rehydrated pieces cook differently from fresh slices, so treat the result as a starting amount you adjust by taste. Oregon State University Extension advises soaking dried mushrooms in boiling water when you are ready to use them. Species and piece size change what a bag gives you, so it pays to compare dried mushrooms by species and cut before you buy.
Your numbers, worked through
fresh = dried x 8
- 28 g dried x 8 = 224 g fresh
- 224 g is about 7.9 oz
Limits
What this tool cannot do
- The tool relies on one published ratio. A species or cut that dries lighter or heavier than the average will not match it exactly.
- It cannot give back fresh texture, because rehydrated pieces cook differently from fresh ones.
- It converts weights of shop-bought or properly identified mushrooms only. A conversion never tells you whether a wild mushroom is safe to eat.
Questions
How many dried mushrooms equal 1 pound of fresh?
About 2 ounces, at the one-to-eight ratio. In metric, that is roughly 57 g of dried mushrooms in place of 454 g of fresh ones. Use it as a starting amount for a cooked dish, then taste and adjust.
Should I use the soaking water?
It carries flavor, but it can also carry grit from the dried pieces. Lift the rehydrated mushrooms out first and leave the settled particles at the bottom of the bowl. Then pour off the clear liquid into your soup, sauce or risotto.
Why do other sites give different ratios?
Species, cut and how dry the pieces are all change the weight, so charts built on different mushrooms land on different numbers. We show the one ratio we read in its source. We did not average in figures we could not check.
Sources3
- Reluctant Gourmet, Mushroom Conversions 1 ounce of dried mushrooms can replace about 8 ounces of fresh in soups, sauces, risotto and other cooked dishes, as a practical starting point. Checked 2026-10-20.
- USDA FoodData Central, Mushrooms, white, raw (SR Legacy 169251) 92.4 g of water per 100 g. Checked 2026-10-20.
- Oregon State University Extension, Preserving Mushrooms Rehydrate dried mushrooms in boiling water when ready to use. As summarized in our drying guide, checked 2026-10-20.