Per USDA FoodKeeper
On the counterCounter
Refrigerate
once opened
In the fridgeFridge
3–4 days
at or below 40°F (4°C)
In the freezerFreezer
Not listed
no FoodKeeper figure
On the counterCounter
18 months
cool, dry place
In the fridgeFridge
Not needed
shelf-stable
In the freezerFreezer
Not needed
keeps without freezing
Quick answer
Yes. Tuna pouches last 3–4 days in the fridge. After that, or sooner if stored badly, they spoil: watch for the signs below.
How to tell if tuna pouches are bad
Smell
Fermented, yeasty or sour beyond the product's usual tang.
Texture
Separation that does not stir back, or a slimy layer.
Colour
Darkening or a change in colour at the top of the jar.
Mould
Any fuzz on the surface or lid — discard the jar.
Tuna pouches past the expiration date
Unopened
FoodKeeper gives unopened tuna pouches 18 months in the pantry, counted from the day you buy it. "Best-by" and "sell-by" describe quality and stock rotation, not safety; only infant formula carries a federally required use-by date.
Opened
Once opened, the printed date no longer applies. Count 3–4 days in the fridge from the day you open it.
How to keep tuna pouches fresh longer
- Refrigerate after opening unless the label says otherwise.
- Use a clean utensil each time; crumbs and double-dipping shorten shelf life.
- Wipe the rim and close the lid tightly.
More about tuna pouches
FAQ
How long does it take for tuna pouches to go bad?
3–4 days in the fridge, per USDA FoodKeeper.
Can tuna pouches expire?
FoodKeeper gives unopened tuna pouches 18 months in the pantry, counted from the day you buy it. "Best-by" and "sell-by" describe quality and stock rotation, not safety; only infant formula carries a federally required use-by date.
What happens if you eat bad tuna pouches?
Usually an unpleasant taste rather than illness, but discard anything mouldy, rancid or smelling off.
How do you keep tuna pouches from going bad?
Refrigerate after opening unless the label says otherwise.
Numbers on this page come from USDA FoodKeeper and FSIS guidance. Last verified November 2026. How we verify our data · Report a wrong number