How long does Peanut butter (commercial) last after opening?

Updated 2026-08-07 · Free · No sign-up

Once opened, Peanut butter (commercial) keeps about 2–3 months in the pantry. Unopened, it keeps about 6–24 months.

Source: USDA FoodKeeper v128 · Category: Pantry staples

How long Peanut butter (commercial) keeps

SituationKeeps for
Unopened · pantry6–24 months
Opened · pantry2–3 months

Only situations with a published figure are listed. A blank isn't “forever” — it means no reliable number is published for it.

Storage

How to tell if Peanut butter (commercial) has gone bad

These are the general spoilage signs for pantry staples — never taste something to test it. When in doubt, throw it out.

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FAQ

How long does Peanut butter (commercial) last after opening?

About 2–3 months in the pantry, according to USDA FoodKeeper v128.

Does Peanut butter (commercial) need to be refrigerated after opening?

Peanut butter (commercial) is shelf-stable at room temperature: cool, dry pantry, sealed — refrigerating after opening is optional and mainly preserves quality. Refrigerating it mainly preserves quality rather than safety.

How can you tell if Peanut butter (commercial) is bad?

Look for: A rancid, paint-like, or musty smell; Bulging, leaking, deeply dented, or rusted cans; Insects or webbing in dry goods; Mould or discoloration. Never taste something to test it — when in doubt, throw it out.

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