Canned Tuna
Quick answer: Unopened canned tuna lasts 2-5 years in the pantry. Once opened, transfer it to an airtight container and refrigerate, it'll keep for 3-4 days. Freezing opened tuna is not recommended; the texture turns to mush.
A can of tuna in the back of your pantry is basically a free pass on a busy weeknight, it's one of the longest-lasting things you can stockpile. The catch (sorry) is that once you open it, the clock moves fast: you've got 3-4 days to use it up before it's headed for the bin. Here's exactly how to store it, what to watch for, and how to actually eat it before it turns.
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Refrigerator
Freezer
How to store canned tuna
Keep unopened cans in a cool, dry pantry between 50°F and 70°F, away from direct sunlight and heat. The moment you crack a can open, drain it fully and move the tuna into a sealed glass or plastic airtight container, not the original can, which can leave a metallic taste. It'll hold in the fridge for up to 4 days.
How to spot spoilage
On the outside: a bulging, rusted, leaking, or deeply dented can (especially along the seams) is a hard no. Inside: discolored flesh (gray or brown), cloudy liquid, or a slimy, mushy texture means it's done. The smell will tell you fast, a sharp metallic, sour, or aggressively 'off' fish odor is different from tuna's normal mild scent.
Use it up before it spoils
- Mash into a quick tuna salad with mayo, celery, and a squeeze of lemon, lunch in four minutes.
- Stir into cooked pasta with olive oil, capers, and cherry tomatoes for a pantry pasta that actually tastes intentional.
- Pile onto crackers or toast with sliced avocado and a pinch of chili flakes.
- Fold into scrambled eggs with a handful of cheese for a high-protein breakfast that uses up the last bit.
- Mix into a can of white beans with red onion and parsley for a no-cook protein bowl.
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Nutrition at a glance
Per 141.7 g (1 can (5 oz drained))
| Calories | 164 |
|---|---|
| Protein | 36.1 g |
| Carbohydrates | 0 g |
| Fiber | 0 g |
| Sugar | 0 g |
| Fat | 1.2 g |
| Saturated fat | 0.3 g |
| Sodium | 71 mg |
Source: USDA FoodData Central. Fish, tuna, light, canned in water, without salt, drained solids (SR Legacy)
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Frequently asked questions
How long does canned tuna last after opening?
Opened canned tuna lasts 3-4 days in the refrigerator when transferred to an airtight container. Don't store it in the original can, move it to glass or plastic with a tight lid and drain it well first.
Does canned tuna need to be refrigerated?
Unopened canned tuna is shelf-stable and does not need refrigeration, a cool, dry pantry is perfect. Once opened, it must go straight into the fridge in a sealed container.
Can you freeze canned tuna?
Freezing opened canned tuna is not recommended. The texture turns mushy and the flavor degrades significantly, leaving you with something unpleasant to eat. Use it within 3-4 days in the fridge instead.
How can you tell if canned tuna has gone bad?
Check the can first: bulging, rust, deep dents along the seams, or leaking are all signs to toss it without opening. Once opened, look for discolored (gray or brown) flesh, cloudy liquid, or a slimy texture, and trust your nose, a sharp metallic or sour odor means it's done.
How long does unopened canned tuna last in the pantry?
Unopened canned tuna lasts 2-5 years when stored in a cool, dry pantry away from heat and sunlight. Check the best-by date on the can and inspect for any damage before opening.