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Gunther Heller

Does Canned Food (Low Acid) Go Bad?

Source: USDA FoodKeeper and FSIS · last verified November 2026

Illustration of canned food (low acid)
Show storage times for
Per USDA FoodKeeper
Counter
Not recommended
cool, dry place
Fridge
3–4 days
at or below 40°F (4°C)
Freezer
Not listed
no FoodKeeper figure
Counter
2–5 years
cool, dry place
Fridge
Not needed
shelf-stable
Freezer
Not needed
keeps without freezing
Quick answer

Yes. Canned food (low acid) lasts 2–5 years unopened in the pantry. After that, or sooner if stored badly, it spoils: watch for the signs below.

How to tell if canned food (low acid) is 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.

Canned food (low acid) past the expiration date

Unopened

FoodKeeper gives unopened canned food (low acid) 2–5 years 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 or not recommended in the pantry from the day you open it.

How to keep canned food (low acid) fresh longer

  • 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.
  • Refrigerate after opening unless the label says otherwise.
  • Use a clean utensil each time; crumbs and double-dipping shorten shelf life.

More about canned food (low acid)

More “does it go bad?” answers, A–Z →

FAQ

How long does it take for canned food (low acid) to go bad?
2–5 years unopened in the pantry, per USDA FoodKeeper.
Can canned food (low acid) expire?
FoodKeeper gives unopened canned food (low acid) 2–5 years 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 canned food (low acid)?
Usually an unpleasant taste rather than illness, but discard anything mouldy, rancid or smelling off.
How do you keep canned food (low acid) from going bad?
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.
Numbers on this page come from USDA FoodKeeper and FSIS guidance. Last verified November 2026. How we verify our data · Report a wrong number