One standard 5-oz can of tuna ranges from about 90–200 calories, depending on fish type, packing liquid, and how much you drain.
Calories Per Can
Protein Per Can
Sodium Per Can
In Water
- Leanest choice
- About 90–120 kcal/can
- ~20–24 g protein
Lower Cal
No-Salt-Added
- Same calories as water-pack
- Big sodium drop
- Good for salads
Low Sodium
In Oil
- Richer texture
- About 160–220 kcal/can
- ~24–26 g protein
Higher Cal
Calories In A Tin Of Tuna — By Type And Can Size
Brands vary, but a quick pattern holds. Water-pack cans sit at the low end, albacore in water lands in the middle, and oil-pack climbs higher. Net weight for a common U.S. can is 5 ounces (142 g). After you drain, most labels list a drained serving of about 113 g, often counted as a single can. One albacore water-pack can from a major label lists 100 calories per drained can (113 g) with ~22 g protein, which fits the range you see across shelves.1
Why the spread? Two things swing the math: packing liquid and species. Oil left on the tuna adds energy. White (albacore) tends to be a touch higher than light (usually skipjack), even in water. Serving sizes in guidance use cooked ounces, not raw—3 oz (85 g) is the standard serving for fish, which helps when you want to compare tuna cans to a plate of baked salmon later.2,3
Common Can Sizes And Typical Calories (Drained)
| Style | Typical Drained Weight | Calories Per Can |
|---|---|---|
| Light In Water | ~113 g (1 can) | ~90–120 kcal |
| White/Albacore In Water | ~113 g (1 can) | ~100–140 kcal |
| Light In Oil (Drained) | ~113 g (1 can) | ~160–220 kcal |
Dial in portions first, then fit snacks and sides. Many people find a single can slides neatly into the day once they set their daily calorie needs. That way, you can decide whether an oil-pack can works today or if a water-pack suits the plan better.
How Draining Changes The Count
Calories listed on the panel reflect drained solids unless a brand states otherwise. Pressing the lid firmly removes more oil or water, which nudges totals. With oil-pack, a thorough drain can drop the number by dozens of calories compared with a light drain. With water-pack, the swing is smaller but still helpful if you’re tracking closely. If you mix tuna with mayo or oil after draining, the add-ins rule the scoreboard.
Leanest Choices For Lower Calories
If your goal is a light lunch, grab a water-pack can. Light varieties usually land lower than albacore. A 3-oz drained portion of light tuna in water sits near ~99 calories on nutrient databases built from government data, which lines up with what you see on most labels.3
When An Oil-Pack Makes Sense
Oil-pack tastes lush and binds better in pasta or rice bowls. You can still manage totals by draining well and skipping extra oil in the recipe. If you want the texture without the bump, stir a tablespoon of yogurt or a squeeze of lemon with mustard instead of extra oil.
Protein, Sodium, And Omega-3s In Canned Tuna
Even at the lower-calorie end, cans deliver a lot of protein for the count. A typical drained can lands near 20–26 g of protein. Sodium depends on brine, so “no-salt-added” is a handy label if you’re watching numbers. Two seafood servings per week is the standard heart-health cue, and a can at lunch is an easy way to hit one of those servings.2,3
Serving Size Guidance You Can Use
Public guidance ties one fish serving to 3 oz cooked (about ¾ cup flaked). That helps you convert canned portions into weekly goals. You’ll also see advice to pick a mix of lower-mercury seafood options across the week. Light tuna in water fits well for most adults; albacore is fine in rotation for many people as well, within the weekly ounce ranges.
Quick Pairings That Keep Numbers Tidy
- Tuna + Whole-Grain Crackers: Use water-pack; add lemon, herbs, and diced celery. Calorie impact stays modest, protein stays high.
- Tuna + Bean Salad: Mix with cannellini beans, red onion, and vinegar. You get fiber and a sturdy lunch with no cooking.
- Tuna + Veggie Wrap: Yogurt and mustard instead of mayo; load spinach and cucumber for crunch.
Safe Choices, Mercury Notes, And Smarter Rotation
Nearly all fish carry trace methylmercury; variety smooths exposure across the week. U.S. guidance recommends at least 8 ounces of seafood weekly for adults, with 8–12 ounces from choices lower in mercury during pregnancy or breastfeeding. Canned light tuna generally sits in the “choose more often” lane, while albacore is kept to less frequent servings for those groups. FDA fish advice
Label Clues That Matter
“Light” vs “White/Albacore”: Light is usually skipjack and tends to be leaner per bite. White means albacore. Calories differ a bit, especially when packed in oil.
“No-Salt-Added”: Same calories as water-pack, lower sodium. That helps if your daily total runs high from bread, soups, or condiments.
Sustainable Catch Terms: These don’t change calories, but if pole-and-line or FAD-free matters to you, brands often mark it clearly on top labels or lids.
Real-World Labels: What Brands Print
To calibrate your own pantry, start with what you already buy. Many light water-pack cans print about 90–120 calories per drained can, while albacore water-pack cans often land near 100–140. One widely sold 5-oz white tuna can lists 100 calories for the drained 113 g can with 22 g of protein and ~320 mg sodium, which matches the pattern you’ll see on shelves.1
Nutrition Snapshot Per 3 Oz (85 g) Drained
| Variety | Calories | Protein & Sodium |
|---|---|---|
| Light In Water | ~99 kcal | ~21.7 g protein; ~40–170 mg sodium |
| White/Albacore In Water | ~110–130 kcal | ~22–24 g protein; brand-dependent sodium |
| Light In Oil (Drained) | ~150–190 kcal | ~24–26 g protein; sodium varies by brine |
Portion Planning For Meals And Goals
For weight loss or light maintenance days, a water-pack can plus crunchy veg and a starch side (potatoes, rice, or whole-grain crackers) hits a good balance. For muscle repair after a workout, an oil-pack can with pasta offers more energy while keeping protein high. If sodium is on your radar, scan for “no-salt-added” and add acids (lemon, vinegar) for punch instead of extra salt.
Quick Conversions You’ll Use
- 1 can (drained) ≈ 113 g → roughly 1⅓ servings of the 3-oz cooked fish standard.
- 2 cans per week → an easy way to reach the two seafood servings that heart health groups recommend. AHA guidance
- Oil-pack swap → drain well and skip added oil in recipes; keep the creamy mouthfeel with yogurt or a little tahini.
FAQs You’re Probably Thinking Through (Without The FAQ Box)
Does Brining Change Calories?
Brine adds sodium, not energy. Calories rise when oil sticks to the fish after draining. That’s why pressing the lid helps.
What About Mercury?
For most adults, canned tuna fits well in an overall seafood pattern. The U.S. advice page explains which tuna styles to pick more often and how many ounces make sense each week for different groups, including during pregnancy. FDA chart
Smart Ways To Use A Can
High-Protein Salad In Minutes
Flake a water-pack can with diced cucumber, parsley, lemon, and a spoon of yogurt. Add a small baked potato on the side for a balanced plate.
Pantry Pasta That Still Skews Light
Toss an oil-pack can (well-drained) with garlic, chili flakes, capers, and a splash of pasta water. Finish with lemon zest. No extra oil needed.
Lunch Box Wrap For Workdays
Mix tuna with mustard, chopped pickles, and a little yogurt. Roll into a whole-wheat tortilla with romaine and tomato. It’s tidy, quick, and filling.
Bottom Line For Label Reading
Pick the style that matches the meal. Water-pack keeps the calorie budget slim. Oil-pack brings richness when you want it. Scan for drained weight, serving size, and sodium, and you’ll know exactly how that can fits into the day.
Want a deeper dive on fatty fish benefits? Try our omega-3 benefits for heart guide.
Sources: 1 Example label data for a 5-oz white tuna can, drained 113 g: 100 calories, 22 g protein (StarKist foodservice spec). 2 U.S. FDA seafood intake guidance and mercury advice. 3 3-oz cooked fish serving and two-servings-per-week recommendation from the American Heart Association.