How much protein is in a 3 oz serving of canned tuna?

Canned tuna, 3 oz (85 g), contains about 21.7 g of protein, 0 g of fiber and 99 kcal, according to USDA FoodData Central.

At a glance

Protein
21.7 g
Fiber
0 g
Calories
99 kcal
Protein per 100 kcal
21.9 g

Portions from USDA FoodData Central

USDA FoodData Central values for Canned tuna. Chosen serving: 3 oz (85 g).
Portion Grams Calories Protein Fiber Carbohydrate Fat
Chosen serving: 3 oz 85 g 99 kcal 21.7 g 0 g 0 g 0.7 g
Per 100 g 100 g 116 kcal 25.5 g 0 g 0 g 0.8 g
1 can 165 g 191.4 kcal 42.1 g 0 g 0 g 1.4 g

A familiar serving, made clear

A drained 3 oz portion of tuna works for a sandwich or a bowl.

Where these numbers come from

USDA description: Fish, tuna, light, canned in water, without salt, drained solids. FDC ID: 171986. Dataset: USDA FoodData Central, SR Legacy, April 2018 release, published 2019-04-01. Food record published 4/1/2019; dataset retrieved 20 September 2026.

Use these values to orient your meal, then make the journal match what was on your plate.

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Written by
Dr. Loredana Gavrilovici, Founder of Food & Fit
Published

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