Tomato sauce is keto only in small portions: it has ~6 g of net carbs per 1/2 cup, against the keto diet's 5 g-per-serving limit.
Net carbs
6 g
per 1/2 cup
These are the carbs that count on keto: total carbs minus fiber.
A 1/2-cup serving has about 6.8 g net carbs, and jarred versions with added sugar can push this higher.
Nutrition facts for tomato sauce
0.3 g
Fat
1.6 g
Protein
1.8 g
Fiber
Why tomato sauce is keto only in small portions?
On keto the goal is to stay under ~5 g of net carbs per serving; tomato sauce has 6 g per 1/2 cup (8 g total − 1 g of fiber).
How much tomato sauce can I eat on keto?
To stay under 5 g of net carbs, the limit is ~90 g of tomato sauce.
Related
Source: nutritional estimate (USDA-style reference) · Confidence: medium
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.
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.
Something off? Let us know.
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