Shelf Stable Foods
How long do potato chips last after opening?
An open bag of potato chips is good for 1–2 weeks before the crunch goes; sealed, USDA puts the bag at 2 months from purchase or whatever the use-by date says.
Pantry, from purchase
How long does it keep?
| Pantry | Package use-by date |
|---|---|
| Pantry, from purchase | 2 months |
| Pantry, opened | 1–2 weeks |
Can it sit out?
Potato chips is shelf-stable, so sitting out at room temperature isn’t the safety question — storage time is.
How to tell if potato chips has gone bad
- Chips that bend instead of snapping
- A flat, cardboard smell out of the bag
- A bitter, old-oil aftertaste that builds as you eat
- Grease spots soaking through the bag from inside
When in doubt, throw it out.
Stale isn’t spoiled — a minute on a sheet pan in a low oven brings the crisp back, though it does nothing for oil that’s turned.
Quick answers
How long do potato chips last after opening?
An open bag of potato chips is good for 1–2 weeks before the crunch goes; sealed, USDA puts the bag at 2 months from purchase or whatever the use-by date says.
How long can potato chips sit out?
Sitting out at room temperature isn’t the safety question for potato chips — storage time is.