How Long Does Tinned Tuna (Opened) Last in the Fridge?
Written by Jordan Morley · Storage times from the USDA FoodKeeper database · Last updated 28 October 2026
Tinned Tuna (Opened) keeps for 3–4 days in a fridge running at 0–5°C.
Storage tips for tinned tuna (opened)
- Fridge at 0–5°C. A fridge thermometer is the cheapest food-safety upgrade — many home fridges run warmer than their dial suggests.
- Canned items will be safe to eat well past the ‘use-by’ or ‘best by’ date as long as the can shows no dents, rust, or swelling.
You can also check the calorie content of tinned tuna (opened) alongside its safety information. Want to know exactly what's in your food? Our ingredient checker covers E-numbers, allergens and vegan status.
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Store it properly
Fridge thermometer
These storage times assume 0–5°C — check what your fridge actually runs at.
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More storage essentials
Vacuum food sealer
Removes the air that speeds spoilage — extends shelf life by days.
Check Price →Airtight glass containers
Fridge, freezer and microwave safe — one less transfer step.
Check Price →Tinned Tuna (Opened) next to similar foods
| Food | Fridge time |
|---|---|
| All Cooked Shellfish | Up to 2 days |
| Cooked Fish | Up to 2 days |
| Cooked Lobster Tails | 2–3 days |
| King Crab Legs (Dungeness, Snow) | 2–4 days |
| Tinned Tuna (Opened) | 3–4 days |
Of the 25 fish and seafood foods with a fridge time in this guide, tinned Tuna (Opened) keeps for longer than 15 and less time than 9.
Tinned Tuna (Opened): the other answers on this site
| Question | Short answer (links to the full page) |
|---|---|
| In pregnancy (Tinned Tuna) | Limit — 4 cans a week |
| While breastfeeding (Tinned Tuna) | Safe |
Common questions
How long does tinned tuna (opened) last in the fridge?
3–4 days in a fridge running at 0–5°C (USDA FoodKeeper guidance). After that, quality and safety both start to slip, and because the bacteria that cause food poisoning are invisible, ‘it seems fine’ is not a reliable test. When in doubt, throw it out.
How can I tell if tinned tuna (opened) has gone off?
A strong fishy or ammonia smell, a slimy surface, dull flesh or milky liquid in the pack are all reasons to bin it. Do not rely on this alone: the time guideline matters even when everything looks fine.
Can I freeze tinned tuna (opened) to keep it longer?
Freezing is not recommended for this food; the texture tends to suffer badly. Buy or cook only what you will use in time.
Can I keep tinned tuna (opened) out of the fridge?
Yes, for a short time only: around 2–5 years in the cupboard or at room temperature. Canned items will be safe to eat well past the ‘use-by’ or ‘best by’ date as long as the can shows no dents, rust, or swelling.
Related answers
Primary source: USDA FoodKeeper.
General information only, not medical advice: see the medical disclaimer. Feeling unwell after eating something? Contact NHS 111 or your GP.