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Buttered popcorn
No
not keto

Buttered popcorn

Snack

Also: is buttered popcorn keto friendly and is buttered popcorn keto-friendly

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Buttered popcorn is not keto: it has ~15 g of net carbs per 3 cups popped, against the keto diet's 5 g-per-serving limit.

Net carbs

15 g

per 3 cups popped

These are the carbs that count on keto: total carbs minus fiber.

With about 15.5 g net carbs per 3-cup serving, popcorn is too high in grain carbs for keto and easy to overeat.

Nutrition facts for buttered popcorn

9 g
Fat
3 g
Protein
3.5 g
Fiber

Why buttered popcorn is not keto?

On keto the goal is to stay under ~5 g of net carbs per serving; buttered popcorn has 15 g per 3 cups popped (19 g total − 3 g of fiber).

How much buttered popcorn can I eat on keto?

To stay under 5 g of net carbs, the limit is ~10 g of buttered popcorn.

Related

See all: Keto snacks

Source: nutritional estimate (USDA-style reference) · Confidence: high
Reviewed by the Ketorai team · Last updated: July 2, 2026 · How we assign the verdict
For information only. This does not replace advice from a health professional.