Nutrition Facts for Tuna
What Is Tuna?
Tuna is a simple staple that shows up in a lot of real-world diets because it is easy to portion, easy to repeat, and easy to track.
It is a good example of a food where portion size matters more than perfection—measure once, repeat often.
Per 100g, Tuna is relatively high in protein (28g) for its calories (132 kcal). That combination is helpful when you want meals that feel filling while staying in a calorie deficit.
Tip: If you are tracking intake, log portions using a realistic serving size (not just 100g) so your daily totals reflect what you actually eat.
Calories in Tuna (Per 100g)
The following values are standardized per 100 grams of tuna.
- Calories
132 kcal
- Protein
28 g
- Carbohydrates
0 g
- Fat
1 g
Nutrition by Serving Size
Calories and macros for common portion sizes of tuna.
| Portion | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| 50g | 66 kcal | 14 g | 0 g | 0.5 g |
| 100g | 132 kcal | 28 g | 0 g | 1 g |
| 150g | 198 kcal | 42 g | 0 g | 1.5 g |
| 200g | 264 kcal | 56 g | 0 g | 2 g |
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Is Tuna Good for Weight Loss?
Tuna can fit into a weight loss diet when portions are controlled. At 132 calories per 100g, it offers a moderate calorie density, so you can include it in a calorie deficit without blowing your budget. Tuna is high in protein (28g per 100g), which supports satiety and helps preserve muscle during a deficit. It is low in carbs, making it easy to pair with vegetables and other foods. For best results, combine tuna with plenty of vegetables and a sustainable calorie target from a calorie calculator or calorie deficit calculator.
Health Benefits of Tuna
No single food is “magic,” but choosing foods that you can portion consistently (and actually enjoy) is a big part of sustainable fat loss and better health habits. Here are practical reasons tuna can be a useful addition to a balanced diet:
- Helps you hit daily protein targets, which supports muscle maintenance during fat loss and recovery during training.
- Works well for volume-friendly meals when you want to stay full on fewer calories.
- Fits low-carb meal patterns and is easy to combine with high-fiber vegetables.
- Keeps macros easier to manage when you want a simpler, leaner plate.
Who Is Tuna Best For?
Weight loss
Tuna is a strong pick for weight loss because protein helps satiety, and the calorie density stays manageable when you keep portions consistent.
Muscle gain
Tuna is useful for muscle gain because it contributes meaningful protein per serving. Add carbs or fat around it depending on your energy needs.
General health
Tuna can be part of a healthy diet when you balance it with vegetables, adequate protein, and overall calorie intake that matches your goals.
How to Use Tuna in Your Diet
Practical ways to include tuna in meals:
- Use it for meal prep: cook once, portion into containers, and rotate flavors (lemon herb, spicy, teriyaki-style).
- Build a simple bowl: tuna + rice or potatoes + a big handful of vegetables + a sauce you love.
- Add it to wraps or sandwiches with crunchy vegetables for volume without many extra calories.
- Make a high-protein salad: add tuna to greens, tomatoes, cucumbers, and a measured dressing.
- Pair it with a higher-carb side on training days, and with extra vegetables on lower-activity days.
- Want a fast macro breakdown? Use the Meal Log Calculator to estimate calories and macros for your full meal (not just one ingredient).
Related Tools
Log tuna and other foods in the Meal Log Calculator. Set daily targets with the calorie calculator and macro calculator.
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