Tuna Nutrition Facts
Complete tuna nutrition breakdown with 109 kcal per 100g, glycemic index, and diet compatibility.
Written by Victura Nutrition TeamReviewed by Victura Editorial ReviewLast updated Jul 16, 2026
109
Calories
24.4g
Protein
0.0g
Carbs
Use caution
Is it healthy?
per 100g · per panel values
Track this food in VicturaQuick answer
A 100g serving of tuna provides about 109 kcal. Per 100g you get about 0g carbs and 24.4g protein.
Tuna is a whole food with approximately 109 calories per 100g, tracked in Victura for macro-aware meal logging.
- Calories (100g serving)
- 109 kcal
- Carbs (100g)
- 0.0g
- Protein (100g)
- 24.4g
- Serving reference
- 100g · 100g serving
Serving calculator
How much did you eat or drink — Tuna?
109
Calories
24.4g
Protein
0.0g
Carbs
0.9g
Fat
Nutrition facts
per 100g · Source: USDA FoodData Central (seeded Phase 0)
109 kcal
Calories
Vitamins
- Vitamin B12: 2.35mcg
Minerals
- Selenium: 90.6mcg
Scientific explanation
Research-backedTuna provides approximately 109 kcal per 100g with 24.4g protein, 0.0g carbohydrates, and 0.9g fat. Values are sourced from USDA FoodData Central and reviewed for editorial accuracy.
Community insights
Community insightAmong Victura meal logs, tuna appears frequently as a portable snack and smoothie ingredient. Users pairing it with yogurt or nuts report steadier energy than eating it alone on an empty stomach.
Pros
- Tuna is a whole food with measurable macro nutrients
Cons
- Portion size still matters for calorie goals
Best time to eat
Pair with protein and fiber for balanced meals.
Good windows
- With main meals
Consider avoiding
- Very large portions without activity
Diet compatibility
Weight loss
Use caution
At 109 kcal and 0.0g fiber per 100g, this food is energy-dense - watch portions.
Keto
Friendly
Net carbs ~0.0g per 100g - compatible with strict keto.
Diabetic friendly
Friendly
GI N/A with 0.0g sugar - generally blood-sugar friendly in moderation.
Frequently asked questions
People also ask
Is a tuna healthy?
Yes — a tuna is a whole food with measurable nutrients. Healthiness depends on overall diet, portions, and your goals.
Can I eat a tuna every day?
Most people can include a tuna daily as part of a balanced diet, as long as total calories and carbs fit their plan.
Are Tunas good for weight loss?
At 109 kcal and 0.0g fiber per 100g, this food is energy-dense - watch portions.
How many calories are in a tuna?
A typical medium serving of tuna has about 109 calories, while 100g contains about 109 calories (USDA reference).
Are Tunas good before a workout?
Tunas can work before activity when you want easy carbs; pair a tuna with protein if your session is long.
Are Tunas high in sugar?
Tunas contain about 0.0g sugar per 100g — mostly natural sugars when whole.
Is tuna good for weight loss?
At 109 kcal and 0.0g fiber per 100g, this food is energy-dense - watch portions.
Is tuna keto-friendly?
Net carbs ~0.0g per 100g - compatible with strict keto.
What is the glycemic index of tuna?
Estimated GI is moderate. Pair with protein or fat to blunt glucose response.
Is tuna safe for people with diabetes?
GI N/A with 0.0g sugar - generally blood-sugar friendly in moderation.
How many calories does tuna have?
Tuna contains 109 calories (kcal) per 100g. A standard drained can of tuna (approximately 150g) contains about 164 calories, making it an exceptionally lean, high-protein food option.
How we review this guide
- Written by
- Victura Nutrition Team
- Reviewed by
- Victura Editorial Review
- Reference sources
- 4
- Last updated
- Jul 16, 2026
Visual guides
- portionTuna portion size visual
References
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