Mushroom converter: whole mushrooms, cups, grams

A recipe says '1 cup sliced mushrooms' or '200 g mushrooms' but you bought a punnet of white buttons and now have to count. A medium white-button mushroom is about 18 g, so the tally moves with size. This converter shifts between whole white-button mushrooms, sliced cups, grams, and ounces.

A small white-button mushroom is barely over a third the weight of a large one, so 'eight mushrooms' in a sauce can swing the yield. Pick the right size below to keep risotto, pasta, and stroganoff on target. Sizes here cover white buttons only; portobello caps run much larger and aren't included.

How much does a mushroom weigh?

A medium, or average, mushroom weighs about 18 g, with a small one around 10 g and a large one around 27 g.

Related Mushroom Ingredients

Got portobello caps? Those weigh 80–200 g whole, well above white button. See our Portobello Mushroom converter.

Mushroom converter tool

Enter an amount, pick your units, and set the size for counting whole mushrooms.

Size applies to whole mushrooms (small / medium / large).

Result

0.25 cups

Mushroom Calculators & Kitchen Tools

Working with mushroom? These tools handle the jobs a converter cannot.

  • Oven to Air Fryer Converter Match the temperature and time when you swap the oven for an air fryer, fan oven, or slow cooker.
  • Recipe Scaler Scale any recipe up or down and keep every ingredient in ratio.
  • Volume Converter Switch between cups, tablespoons, teaspoons and millilitres for any ingredient.
  • Weight Converter Switch between grams, ounces, pounds and kilograms for any ingredient.

Common Mushroom conversions

Quick reference for mushroom at medium size. Switch the size in the converter above for small or large.

mushroomsCups (chopped)
1 mushroom0.25 cups
2 mushrooms0.49 cups
3 mushrooms0.74 cups
4 mushrooms0.99 cups
5 mushrooms1.23 cups
6 mushrooms1.48 cups

Mushroom conversion chart

The chart below shows how whole mushrooms (medium size) convert to cups, grams and ounces.

mushroomscupscups (US)gozlbkg
1 mushroom0.25 cups0.26 cups (US)18 g0.63 oz0.04 lb0.02 kg
2 mushrooms0.49 cups0.51 cups (US)36 g1.27 oz0.08 lb0.04 kg
3 mushrooms0.74 cups0.77 cups (US)54 g1.9 oz0.12 lb0.05 kg
4 mushrooms0.99 cups1.03 cups (US)72 g2.54 oz0.16 lb0.07 kg
5 mushrooms1.23 cups1.29 cups (US)90 g3.17 oz0.2 lb0.09 kg

Mushroom varieties and best uses

The conversions above are the same whatever variety you use; the difference is what each is good for. Here is how the common mushroom varieties compare.

VarietyBest for
White ButtonEveryday sautéing, soups, and pizza: mild and tender, the standard supermarket mushroom.
Cremini (Baby Bella)All-purpose cooking: brown-skinned, firmer, meatier white-mushroom variety with deeper flavour. Sold as Cremini, Baby Bella, or Portobellini.
ShiitakeAsian dishes and stocks: woody stems, strong umami; sold fresh or dried.
OysterQuick sautés and stir-fries: delicate, fan-shaped caps that cook in minutes.
ChestnutRoasting and risotto: nutty brown caps, firmer than white button, similar to cremini.
PorciniRisotto, sauces, and stews: deeply savoury; usually sold dried and rehydrated.

Which should I pick?

For everyday sautéing, pasta, and risotto, Cremini (Baby Bella) gives deeper, meatier flavour than White Button. No Cremini? White Button is the reliable supermarket default. For stocks and stir-fries that want strong umami, reach for Shiitake; for tender quick sautés where you don't want the mushroom to overpower, Oyster.

Frequently Asked Questions

What is the size of a medium mushroom?
A medium mushroom weighs about 18 g, which works out to roughly 0.25 cups (0.26 US cups) of chopped flesh. Mushrooms come in a range of sizes depending on the season, variety and where they were grown, so weight and cup figures shift accordingly. Use the size selector above to match what you actually have, then read the exact conversion for any amount.
How much does a medium mushroom weigh?
A medium mushroom weighs about 18 g, with a small one around 10 g and a large one near 27 g. That range changes the weight of any recipe that counts mushrooms by the piece, so set the size selector to match what you actually have before trusting a cup or gram figure.
How much does an average mushroom weigh?
An average mushroom is the same as a medium one: about 18 g. A small mushroom is lighter at around 10 g and a large one heavier at about 27 g, so the size you actually have changes the total for any recipe that counts mushrooms by the piece rather than by weight.
How much does a large mushroom weigh?
A large mushroom weighs about 27 g, noticeably more than a medium, or average, one at 18 g or a small one at 10 g. Set the size selector to large to convert cups, grams and ounces for the bigger mushrooms you actually have on the counter.
Which mushroom variety should I use?
For everyday sautéing, pasta, and risotto, Cremini (Baby Bella) gives deeper, meatier flavour than White Button. No Cremini? White Button is the reliable supermarket default. For stocks and stir-fries that want strong umami, reach for Shiitake; for tender quick sautés where you don't want the mushroom to overpower, Oyster.
How do I convert grams to ounces for any ingredient?
Converting grams to ounces is pure weight maths that applies to any food, not just mushrooms, so 200 grams is always 7.05 ounces. For other amounts, the weight converter at the link below handles grams, ounces, pounds, kilograms and stone in both directions. Grams to ounces converter

Mushroom measurement options

Choose from the following measurements to convert from

Other produce

Convert another fruit or vegetable: