Calories in Canned tuna (in water)
165kcal
Per 1 can (5 oz) (142g)
Protein
36.9g
Carbs
0g
Fat
1.4g
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Canned tuna in water — extremely lean protein, shelf-stable, cheap.
Best protein-per-dollar at most grocery stores. ~70 kcal/can with 16g protein. Mercury concerns limit to 2-3 cans/week for most adults.
Best for
- cutting or high-protein days — 26g protein / 100g at 116 kcal
- meals where you want volume of protein without a fat bomb
Watch out
- restaurant versions that are breaded, sauced, or cooked in oil — the log is for the plain item
- weighing cooked vs raw without matching the database state
How to log it
Prefer weighing canned tuna (in water) after cooking if that is how you eat it, or stick to one convention. 1 can (5 oz) (~142g) is the practical unit in the app.
Where it fits the day
Fits as the protein anchor. Pair with a carb and produce so the plate is not only lean protein and boredom.
Cooked, grilled, fried & breaded
The page numbers are for plain canned tuna (in water). Oil, breading, and restaurant sauces change the estimate — typical kcal per 100g:
These are typical ranges, not lab measurements. Restaurant recipes, oils, and sauces vary — treat them as logging estimates and edit if your plate looks heavier.
Common serving sizes
Per 100g: 116 kcal · 26g P · 0g C · 1g F