Is butternut squash keto?

Butternut squash

Not keto No — butternut squash is not keto-friendly.

A starchy winter squash. One cup uses a big chunk of a daily carb budget.

Nutrition per serving

1 cup cubed · 140 g
Net carbs
14g
Calories
63kcal
Protein
1.4g
Fat
0.1g
Total carbs
16 g
Fiber
2.8 g
One serving vs. a 20 g daily net-carb limit 68%

About 51.5 g of butternut squash adds up to 5 g net carbs — about 37% of a typical serving.

Nutrition facts for butternut squash
NutrientPer servingPer 100 g
Calories63 kcal45 kcal
Total carbohydrate16 g12 g
Dietary fiber2.8 g2 g
Net carbs14 g9.7 g
Sugars 3.1 g 2.2 g
Protein1.4 g1 g
Fat0.1 g0.1 g

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If you do eat butternut squash

  • For a similar color and sweetness in soup, use a little pumpkin with lots of cauliflower.

Better keto swaps for butternut squash

Keto substitutes for potatoes 7 alternatives with carb comparisons and recipes Read guide

Frequently asked questions

Is butternut squash keto?

No — butternut squash is not keto-friendly. A starchy winter squash. One cup uses a big chunk of a daily carb budget.

How many net carbs are in butternut squash?

1 cup cubed (140 g) of butternut squash has about 14 g net carbs (16 g total carbs minus 2.8 g fiber). Per 100 g, that's 9.7 g net carbs.

How much butternut squash can I eat on keto?

About 51.5 g of butternut squash adds up to 5 g net carbs — about 37% of a typical serving. On a typical 20 g daily limit, one serving uses about 68% of your carbs.

What is a good keto substitute for butternut squash?

More vegetables

Full vegetables list

Source: USDA FoodData Central (SR Legacy #169295): Squash, winter, butternut, raw. Net carbs = total carbohydrate − fiber. Rating: Not keto — More than about 10 g net carbs per typical serving. Swap it for a low-carb alternative. How we rate foods. Last reviewed October 18, 2026.

Typical price: about $1.89/lb — USDA ERS 2023 average (butternut squash, fresh: $1.27/lb as sold, 71% usable), adjusted +6% for inflation to September 2026. How we estimate prices

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