How many cups is one medium mushroom?

One medium mushroom is 0.25 cups. The conversion scales in a straight line, so 2 mushrooms is 0.49 cups and 3 mushrooms is 0.74 cups. Multiply or divide that figure to match whatever your recipe needs, or use the converter above for an exact reading at any amount.

How many grams is one medium mushroom?

One medium mushroom weighs about 18 grams. A small one is about 10 grams and a large one about 27 grams, so set the size selector to match what you actually have. The converter above and the chart below cover all sizes and units for any amount.

Convert Mushroom from Whole Mushrooms

Mushroom converter

Use the tool below to convert mushroom from Whole Mushrooms to the measurement that you need.

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 is one medium mushroom?

One medium mushroom is 0.25 cups, about 18 grams. 2 mushrooms is 0.49 cups and 3 mushrooms is 0.74 cups. Use the converter below for any amount.

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

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

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Mushroom sizeSize applies to whole mushrooms (small / medium / large).

Result

0.25 cups

Common Mushroom conversions

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

mushrooms	Cups (chopped)
1 mushroom	0.25 cups
2 mushrooms	0.49 cups
3 mushrooms	0.74 cups
4 mushrooms	0.99 cups
5 mushrooms	1.23 cups
6 mushrooms	1.48 cups

Mushroom conversion chart

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

mushrooms	cups	cups (US)	g	oz	lb	kg
1 mushroom	0.25 cups	0.26 cups (US)	18 g	0.63 oz	0.04 lb	0.02 kg
2 mushrooms	0.49 cups	0.51 cups (US)	36 g	1.27 oz	0.08 lb	0.04 kg
3 mushrooms	0.74 cups	0.77 cups (US)	54 g	1.9 oz	0.12 lb	0.05 kg
4 mushrooms	0.99 cups	1.03 cups (US)	72 g	2.54 oz	0.16 lb	0.07 kg
5 mushrooms	1.23 cups	1.29 cups (US)	90 g	3.17 oz	0.2 lb	0.09 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.

Variety	Best for
White Button	Everyday 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.
Shiitake	Asian dishes and stocks: woody stems, strong umami; sold fresh or dried.
Oyster	Quick sautés and stir-fries: delicate, fan-shaped caps that cook in minutes.
Chestnut	Roasting and risotto: nutty brown caps, firmer than white button, similar to cremini.
Porcini	Risotto, 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

How much is one medium mushroom?: One medium mushroom is 0.25 cups, or 18 grams. The ratio is fixed, so 2 mushrooms is 0.49 cups and 3 mushrooms is 0.74 cups. Use the converter above for any amount, or the chart below for the most common quantities. Open the mushroom converter
How many cups is one medium mushroom?: One medium mushroom is 0.25 cups. The conversion scales in a straight line, so 2 mushrooms is 0.49 cups and 3 mushrooms is 0.74 cups. Multiply or divide that figure to match whatever your recipe needs, or use the converter above for an exact reading at any amount.
How many grams is one medium mushroom?: One medium mushroom weighs about 18 grams. A small one is about 10 grams and a large one about 27 grams, so set the size selector to match what you actually have. The converter above and the chart below cover all sizes and units for any amount.

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