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Carb Information for Mushrooms

Mushroom Carbs, Nutritional Information and Low-Carb Recipes


Updated May 27, 2014

Carb Information for Mushrooms
White button mushrooms are the type most commonly found in stores in the United States. Technically, they are fungi, but are usually thought of as a vegetable for food purposes.

Mushroom caps are handy for stuffing. Raw mushrooms can hold spreads and dips, or they can be baked with other kinds of stuffings, such as seafood or cheeses mixed with herbs and spices.

Carb Profile Page for Portabella Mushrooms

Carbohydrate and Fiber Counts for White (Button) Mushrooms

  • ½ cup sliced or chopped raw white mushrooms: 1 gram effective (net) carbohydrate and 8 calories
  • 1 medium white mushroom (3 medium mushrooms weigh about 2 oz): .5 gram effective (net) carbohydrate and 4 calories
  • 4 oz mushroom (about 5 large mushrooms, 6 medium mushrooms, or 11 small mushrooms): 2.5 grams effective (net) carbohydrate plus 1 gram fiber and 25 calories

Glycemic Index for White Mushrooms

As with most non-starchy vegetables, there is no scientific study of the glycemic index of mushrooms.

More Information about the Glycemic Index

Estimated Glycemic Load of White Mushrooms

  • ½ cup sliced mushroom: 1
  • 1 medium mushroom: 0
  • 4 oz mushroom (¼ lb.): 2

More Information About the Glycemic Load

Health Benefits of White Mushrooms

White mushrooms are a very good source of copper, selenium, riboflavin, niacin, and panothenic acid, and a good source of potassium. They also have been found to have high levels of some antioxidant compounds that may help prevent some cancers.

Low-Carb Recipes with Mushrooms

More Carb Profiles:


Grube BJ, Eng ET, Kao YC, et al. White Button Mushroom Phytochemicals Inhibit Aromatase Activity and Breast Cancer Cell Proliferation. Journal of Nutrition 131(12):3288-93 (2001).

Leroux, Marcus, Foster-Powell, Kaye, Holt, Susanna and Brand-Miller, Janette. "International table of glycemic index and glycemic load values: 2002." American Journal of Clinical Nutrition. Vol. 76, No. 1, 5-56, (2002).

Savoie JM, Minivielle N, Largeteau M. Radical-scavenging properties of extracts from the white button mushroom, Agaricus bisporus. Journal of the Science of Food and Agriculture, epub: February 5, 2008

USDA National Nutrient Database for Standard Reference, Release 20.

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