Calories in Tuna
100 g of Tuna has about 132 calories. At the reference weight of 120 g, that is about 158 calories. Enter the amount you actually eat to calculate your portion.
Calories per 100 g
132 kcal
calories per 100 g
- Protein
- 28 g
- Fat
- 1 g
- Carbs
- 0 g
These are reference values. Ingredients and preparation can change the result.
Macros in TunaCalculate calories for your portion
Enter the weight to calculate calories and macros here. No sign-up required.
In your portion
158 kcal
- Protein
- 33.6 g
- Fat
- 1.2 g
- Carbs
- 0 g
How to calculate calories in Tuna
Multiply the calories per 100 g by your portion weight, then divide by 100. For the reference 120 g portion, the calculation is:
132 × 120 ÷ 100 ≈ 158 kcal
Reference portion: serving (120 g). This is an example amount, not a recommended portion. Weigh your food when possible: a cup, slice or piece can vary in size.
Check that the entry matches the food you have, including its preparation. If raw or cooked is not specified, check your label or a matching nutrition reference before logging it.
Calories by portion size
| Portion | Calories | Protein | Fat | Carbs |
|---|---|---|---|---|
| 50 g | 66 kcal | 14 g | 0.5 g | 0 g |
| 100 g | 132 kcal | 28 g | 1 g | 0 g |
| 120 g | 158 kcal | 33.6 g | 1.2 g | 0 g |
| 200 g | 264 kcal | 56 g | 2 g | 0 g |
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How FoodWarz works →What changes the calories?
Oil, sauces, sugar, toppings, cooking method and portion weight can change tuna calories quickly.
FAQ
How many calories are in a 120 g portion of Tuna?
Using this reference entry, 120 g has about 158 calories. The calculator scales the per-100 g value; it does not identify your recipe or brand.
Can I use the same number for any cup, slice or piece?
No. Household measures and individual pieces can have different weights. Use the gram weight of the edible portion, or the serving weight printed on your package.
Is tuna good for calorie tracking?
Yes, as long as you track portion size. The biggest source of error is usually weight, sauces, oil and mixed ingredients.
How Tuna compares
Of the 6 other foods in this table, 4 have fewer calories per 100 g than Tuna and 2 have more.
Data sources
Reference values are compiled from USDA FoodData Central, Open Food Facts and curated food databases. Your actual portion may differ by recipe, brand and cooking method.
Nutrition data methodologyNutrition values are estimates for calorie tracking and may vary by recipe, brand, cooking method and portion size. Not medical advice.
Last updated: October 3, 2026