Is Tuna keto?
Tuna is keto: it has ~0 g of net carbs per 1 fillet, within the keto diet's 5 g-per-serving limit.
Net carbs = total − fiber
0 g
per 1 fillet
These are the carbs that count on keto: total carbs minus fiber.
Tuna is keto-friendly with 0 grams of net carbs per serving.
Nutrition facts for tuna
7.5 g
Fat
40 g
Protein
0 g
Fiber
How many carbs are in tuna?
Tuna has ~0 g of carbs and ~0 g of net carbs per 1 fillet (total carbs minus 0 g of fiber).
Why tuna is keto?
On keto the goal is to stay under ~5 g of net carbs per serving; tuna has 0 g per 1 fillet (0 g total − 0 g of fiber).
Related
Yes
fish
0 g net
/ 1 fillet
Yes
Anchovy
0 g net
/ 2 oz
Yes
Swordfish
0 g net
/ 1 fillet
Yes
Shrimp
0 g net
/ 3 ounces
Yes
Trout
0 g net
/ 1 fillet
Yes
Mussel
3 g net
/ 3 ounces (approx. 6-8 medium mussels)
Keto recipes with tuna
See all: Keto seafood
Source: nutritional estimate (USDA-style reference) · Confidence: high
Reviewed by the Ketorai team · Last updated: July 5, 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 5, 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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