Carb Counts for Summer Squash

Carbs, Nutritional Information, and Low-Carb Recipes

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Summer squashes are in the same family as winter squashes such as pumpkins, butternut squash, and acorn squash, but they have thinner skins and the flesh is much less dense than winter squashes (thus, they have less carbohydrate, but are also lower in nutrients).  Zucchini, yellow crookneck, and pattypan (scallop) squash are common varieties.  Zucchini are also called marrow (or vegetable marrow or Italian marrow) and courgette, depending on how large the vegetable is and where in the world you are.

  (Exact delineations seem to be hard to come by.)

I have a separate entry for zucchini.  Although they are very similar to other summer squashes in carbohydrate content, they have a slightly different nutrient profile.

Summer squashes are very versatile since they are mild in flavor.  They are a good choice to make noodles from or otherwise used as a pasta substitute.

Squashes were one of the foods Christopher Columbus brought back to Europe from the New World.

Carbohydrate and Fiber Count for Summer Squash

  • ½ cup raw sliced summer squash: 1.5 gram effective (net) carbohydrate plus .5 gram fiber and 12 calories
  • ½ cup cooked sliced summer squash: 3 grams of effective (net) carbohydrate plus 1 gram of fiber and 21 calories

  • 4 oz raw summer squash (¼ lb.): 2 grams effective (net) carbohydrate plus 1 gram fiber and 18 calories

Glycemic Index for Summer Squash

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

More Information about the Glycemic Index

Estimated Glycemic Load of Summer Squash

  • ½ cup sliced summer squash: 1
  • 4 oz. summer squash (¼ lb.): 2

More Information About the Glycemic Load

Health Benefits of Summer Squash

Summer squash is a very good source of vitamin C, and a good source of vitamin B6, riboflavin, and manganese, as well as smaller amounts of a lot of other nutrients.

  They also have a fair amount of lutein and zeaxanthin, which can help protect us from some age-related eye conditions.

Selection and Storage of Summer Squash

Make sure the skin is not damaged, nor should it be very hard.  As always, vegetables that are "heavy for their size" are the best choices as it is a sign that they are fresher.  They can be stored whole and unwashed in the refrigerator for a week or so.

Low-Carb Recipes with Summer Squash

More Carb Profiles


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).

USDA National Nutrient Database for Standard Reference, Release 20.

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