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 Victura

Quick 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
Tuna food photo
Tuna — real food photo
Tuna calories and macros infographic
Calories & macros

Serving calculator

How much did you eat or drinkTuna?

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

Protein24.4g
Carbohydrates0.0g
Fat0.9g
Fiber0.0g
Sugar0.0g

Vitamins

  • Vitamin B12: 2.35mcg

Minerals

  • Selenium: 90.6mcg

Scientific explanation

Research-backed

Tuna 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 insight

Among 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

Yes — a tuna is a whole food with measurable nutrients. Healthiness depends on overall diet, portions, and your goals.

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

Revision & correction policy

Visual guides

  • portionTuna portion size visual

References

  1. USDA FoodData Central(usda)
  2. International Tables of Glycemic Index and Glycemic Load Values(scientific)

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