Butter Per USDA FoodKeeper
On the counterCounter
Not recommended
keep it cold
In the fridgeFridge
1–2 months
at or below 40°F (4°C)
In the freezerFreezer
6–9 months
at 0°F; quality, not safety
Quick answer
Yes. Butter lasts 1–2 months in the fridge and 6–9 months in the freezer. After that, or sooner if stored badly, it spoils: watch for the signs below.
How to tell if butter is bad
Smell
Rancid: like crayons, paint or old nuts.
Taste
Bitter or soapy aftertaste.
Texture
Sticky or gummy residue around the lid.
Colour
Darkened or cloudy where it should be clear.
Butter past the expiration date
Best-by and sell-by
FoodKeeper gives unopened butter 1–2 months in the fridge, 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.
Past the date
Butter past its best-by date is usually safe if stored well; check smell, look and taste before using.
How to keep butter fresh longer
- May be left at room temperature for 1 - 2 days.
- Keep in a cool, dark place, tightly closed, away from heat.
- Refrigerating nuts, seeds and nut oils extends shelf life significantly.
More about butter
FAQ
How long does it take for butter to go bad?
1–2 months in the fridge, per USDA FoodKeeper.
Can butter expire?
FoodKeeper gives unopened butter 1–2 months in the fridge, 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 butter?
Usually an unpleasant taste rather than illness, but discard anything mouldy, rancid or smelling off.
How do you keep butter from going bad?
May be left at room temperature for 1 - 2 days.
Numbers on this page come from USDA FoodKeeper and FSIS guidance. Last verified November 2026. How we verify our data · Report a wrong number