A typical serving of tuna salad (1 cup, 205 g) has about 383 calories. Per 100 g: 187 kcal, 16 g protein, 9.4 g carbs, 9.3 g fat. 3 oz (85 g) comes to 159 calories. The energy comes from a mix of carbs, fat, and protein.
| Serving | Weight | Calories |
|---|---|---|
| 1 cup | 205 g | 383 kcal |
| 3 oz | 85 g | 159 kcal |
| 100 g | 100 g | 187 kcal |
The mayo decides everything: tuna salad carries about 60% more calories than plain tuna. On the energy-density scale, 187 kcal per 100 g puts tuna salad at the moderate end. Protein density is strong: about 8.6 g of protein per 100 calories.

A typical serving (1 cup, 205 g) has about 383 calories, and 100 g has 187 kcal. Calories scale with weight, so double the portion means double the number.
There are 16 g of protein in 100 g of tuna salad, which works out to about 32.8 g per serving (1 cup). That is a genuinely high protein share for the calories.
There are 9.4 g of carbohydrate per 100 g of tuna salad, or about 19 g in 1 cup (205 g).
Every value on this page comes from USDA FoodData Central, entry 175160 (SR Legacy). Serving figures are converted from the per-100-g data, so rounding can shift a total by a calorie or two.
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Nutrition data: USDA FoodData Central, FDC ID 175160 (SR Legacy). Serving calories are computed from the per-100-g values.