How long does peanut butter last?
Short answer: Peanut butter (commercial) keeps 6–24 months (2–3 months once opened) in the pantry.
Storage chart
| Type | Pantry | Fridge |
|---|---|---|
| commercial | 6–24 months; 2–3 months (after opening) | — |
| commercially produced, containing hydrogenated fat or other stabilizers | 6–9 months; 2–3 months (after opening) | 12 months; 3–4 months (after opening) |
| natural | — | 12 months; 3–4 months (after opening) |
Fridge at 40°F (4°C) or colder, freezer at 0°F (−18°C). Freezer times are for best quality; food kept frozen stays safe indefinitely.
Storage tips
- Or package use-by date, whichever comes first.
Keep it longer
Keep the fridge at 40°F (4°C) or colder and the freezer at 0°F (−18°C). Write the date on containers when you open or cook something.
Common questions
How long does peanut butter last at room temperature?
6–24 months (2–3 months once opened) in a cool, dry pantry.
How can I tell if peanut butter has gone bad?
Throw it out if you see mold, a slimy texture, an off smell or an odd color. For anything perishable, go by the storage time rather than smell: bacteria that cause food poisoning don't usually change how food looks or smells.
More shelf stable foods
Source: USDA FoodKeeper data (USDA Food Safety and Inspection Service). Updated 2026-10-13. General information, not medical advice. When in doubt, throw it out.