Tuna Nutrition Facts
A 100 g serving of tuna contains 116 kcal, 26g protein (lime), 0.8g fat (pink) and 0g carbohydrate (blue). It has no fiber and almost no sugar. Its other nutrient values are modest — see the full breakdown below.
Core Nutrients per 100 g
PER 100 G SERVINGThe six values MacroDrop shows on every meal card: energy, the three macros, fiber and sugars.
Extended Nutrients
PER 100 G SERVINGGrouped as in the app: lipids, minerals, vitamins and other compounds sit one level below the core six. Daily values follow the FDA 2,000 kcal reference.
Understanding Tuna Nutrition
Tuna is a high-protein food valued for its amino acid content and micronutrient density. At 116 kcal per 100 g serving, it provides 26g of protein, 0g of carbohydrate and 0.8g of fat. Tuna is particularly rich in vitamin B12, delivering 2.9µg — 125% of the daily value — in a single serving. It has no fiber and almost no sugar.
For athletes and anyone tracking macros, tuna is an efficient source of protein, delivering 22.0g of protein per 100 kcal. It pairs well with slower-digesting carbohydrate sources across a meal, and its 26g protein per 116 kcal gives a favorable protein-to-calorie ratio for cutting or maintenance.
Frequently Asked Questions
How many calories are in a 100 g serving of tuna?
A 100 g serving of tuna has 116 kcal, 26g protein, 0.8g fat and 0g carbohydrate.
How much protein is in tuna?
26g per 100 g serving. This is a complete or near-complete protein source that contributes meaningfully to daily amino acid needs.
Is tuna high in sodium or saturated fat?
Tuna is relatively low in both sodium and saturated fat per 100 g serving.
Which nutrients is tuna richest in?
No single micronutrient stands out sharply — see the full breakdown below.
Is tuna good for tracking macros?
For athletes and anyone tracking macros, tuna is an efficient source of protein, delivering 22.0g of protein per 100 kcal.
Log the tuna in two seconds
MacroDrop tracks all of these nutrients — core and extended — from a photo, your voice or a barcode. Offline USDA database, 7,800 foods.
Values come from the USDA FoodData Central entry Fish, tuna, light, canned in water, without salt, drained solids (FDC ID 171986), per 100 g. Daily values follow the FDA 2,000 kcal reference. Last reviewed August 2026.