How long does Peanut Butter last?
How long does Peanut Butter last? fridge 3 months, pantry 3 months, freezer 1 year. Plus spoilage signs, sources, and an unopened-vs-opened note.
Quick answer
Sealed / unopened: 6–9 months
Signs Peanut Butter has gone bad
- Crayon-like or paint-thinner rancid smell.
- Dark color shift.
- Hardened or rock-like texture.
- Oil layer that won't restir.
Discard immediately if
- Sharp rancid or bitter smell
- Visible mold (especially in natural nut butters)
- Oily separation with off odor
Why guidance varies
Vinegar, salt, sugar, and acidity content vary widely by brand and formulation — natural and reduced-sugar versions spoil 2–3× faster than traditional ones.
Get a heads-up before it expires. Search the full database instead.
Frequently asked questions
How long does Peanut Butter last?
In the fridge: 3 months. In the pantry: 3 months. In the freezer: 1 year. Sealed / unopened: 6–9 months. Natural PB separates and goes rancid faster — refrigerate it. Regular PB is fine in the pantry.
How can you tell if Peanut Butter has gone bad?
Signs that Peanut Butter has gone bad: Crayon-like or paint-thinner rancid smell; Dark color shift; Hardened or rock-like texture; Oil layer that won't restir.
What does the date label on Peanut Butter mean?
Peanut Butter usually carries a "Best By" date. A quality marker — the product is at peak quality before this date, but it’s safe to eat afterward if stored correctly. See our date-labels guide for the full breakdown.
Sources for this answer
- A USDA FoodKeeper — Storage windows and refrigeration guidance for this category.
- A FDA — Are You Storing Food Safely? — Date-label interpretation and food-safety baseline.