Tuna Calories and Macros — Nutrition Facts per 100g (canned in water)

Tracking tuna? Expect 116 calories per 100g (canned in water), with 25.5g of protein, 0g of carbs, and 0.8g of fat. The full micronutrient picture and goal-fit notes follow, with figures drawn from USDA FoodData Central.

Tuna nutrition facts

*Percent Daily Values are based on a 2,000-calorie diet. Source: USDA FoodData Central.

Reference is canned skipjack tuna in water, drained. Fresh tuna (yellowfin, raw) is similar on protein but slightly higher in calories.

How does tuna fit your goals?

With 25.5g of protein per 100g (canned in water), tuna is a workhorse for anyone tracking macros for weight loss or muscle gain. Protein is the most satiating macro and the hardest to over-eat by accident, which is why high-protein foods anchor most successful cutting and recomposition plans. A single serving covers roughly 17% of a 150g daily protein target — the kind of number that adds up quickly when you build meals around it.

Diet-wise, tuna fits keto, low-carb, and high-protein eating patterns.

How tuna compares to other proteins

Tracking tuna without the friction

The numbers above only help if logging is easy enough that you actually do it. Instead of searching a database every time tuna hits your plate, snap a photo in Bento Bunny — the app recognises the food, estimates the portion, and adds the macros for you. No subscription needed for core tracking.

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Browse all proteins in the food database.