Macros in Tuna
Quick Answer
Tuna contains 10g protein, 20g carbs, and 5g fat per 100g. This macro breakdown makes it a balanced food for your diet. Scan tuna photos instantly to track macros for weight loss, muscle gain, or keto diets.
Macro Breakdown - Tuna
| Nutrient | Amount |
|---|---|
| Protein | 10g |
| Carbohydrates | 20g |
| Fat | 5g |
| Fiber | 2g |
| Calories | 150 kcal |
| Serving Size | 100g |
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Tuna Macros (Protein, Carbs, Fat)
Tuna provides a macro breakdown of 10g protein, 20g carbohydrates, and 5g fat per 100g. This translates to 27% of calories from protein, 53% from carbs, and 30% from fat. Understanding these macronutrient ratios helps you track whether tuna aligns with your dietary goals, whether that's hitting protein targets for muscle gain, limiting carbs for keto, or balancing macros for general health.
Protein Content in Tuna
Tuna contains 10g of protein per 100g. While tuna provides some protein, it's not a primary protein source. Combine it with high-protein foods like chicken, fish, eggs, or Greek yogurt to meet your daily protein goals. Use our protein calculator to determine your personal protein target based on your fitness goals.
Carbohydrates in Tuna
Tuna contains 20g of carbohydrates per 100g. This moderate carb content fits well into balanced diets and can support active lifestyles without causing significant blood sugar spikes. For diabetics, monitor portion sizes and pair carbs with protein to manage glucose levels effectively.
Fat Content in Tuna
Tuna contains 5g of fat per 100g. As a low-fat food, tuna is suitable for low-fat diets or when you're allocating fat macros to other meals. Remember that dietary fat doesn't make you fat—excess calories do. Fat is essential for health, providing 20-35% of daily calories in a balanced diet.
How to Track Tuna Macros Easily
Instead of manually entering tuna macros into a food database, use our free AI food scanner to track macros from photos instantly. Simply take a picture of your meal, and the AI identifies tuna and calculates portion-aware macros automatically. This eliminates guesswork around serving sizes and ensures accurate macro tracking for weight loss, muscle gain, or performance goals. The scanner works with restaurant meals, homemade dishes, and meal prep—no barcode needed for fresh foods.
Tuna Macro Ratios for Different Goals
The 10:20:5 gram ratio in tuna makes it versatile for various dietary approaches. For weight loss, prioritize high-protein foods to preserve muscle. For muscle gain, balance protein with sufficient carbs for energy and recovery. For keto, aim for high fat, moderate protein, and very low carbs (under 20g net carbs daily). Use our macro calculator to set personalized targets for your goal.
Best Time to Eat Tuna
Tuna can be eaten anytime based on your meal preferences and daily macro targets. Meal timing matters less than hitting your total daily macros. Whether you eat tuna at breakfast, lunch, or dinner, what counts is meeting your protein, carb, and fat goals for the day.
Portion Size & Serving Variations for Tuna
The standard serving size for tuna is 100g, which contains 10g protein, 20g carbs, and 5g fat. However, real-world portions often vary. Restaurant servings are typically 1.5-2x larger than standard servings, which means more calories and macros than listed here. Homemade portions depend on your preparation. To get accurate macros for YOUR specific portion, use our food scanner to analyze photos of your actual serving. The AI estimates portion size and adjusts macros accordingly—no food scale needed.
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Frequently Asked Questions
Q:What are the macros in tuna?
A: Tuna contains 10g protein, 20g carbs, and 5g fat per 100g.
Q:How much protein is in tuna?
A: Tuna provides 10g of protein per 100g.
Q:How many carbs are in tuna?
A: Tuna contains 20g of carbohydrates per 100g.
Q:How much fat is in tuna?
A: Tuna has 5g of fat per 100g.
Q:Is tuna high in protein?
A: No, tuna is not a high-protein food. Pair it with protein sources to meet your daily targets.
Q:Is tuna keto-friendly?
A: Tuna has 20g carbs, which may exceed keto limits (20g/day) depending on portion size.
Q:What are the macros in tuna for bodybuilding?
A: For bodybuilding, tuna provides 10g protein (muscle building), 20g carbs (energy), and 5g fat (hormones) per 100g.
Q:How do I track tuna macros easily?
A: Use our free AI food scanner to take a photo of tuna. The app identifies it and calculates macros automatically based on your portion size.
Q:Are tuna macros good for cutting?
A: Tuna can fit a cutting diet if you track total daily macros and stay in a calorie deficit.
Q:What's the macro ratio in tuna?
A: Tuna has a 10:20:5 gram ratio (protein:carbs:fat).
Q:Is tuna good for meal prep?
A: Yes, tuna is excellent for meal prep as a lean protein source.
Q:How to calculate net carbs in tuna?
A: Net carbs = total carbs (20g) minus fiber (2g) = 18g net carbs per 100g.
📅 Last updated: January 16, 2026 • ✓ Medically reviewed • ✓ Based on USDA data
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