How long do walnuts last?
Short answer: Walnuts (shell or no shell) keep 9–12 months in the fridge, 24 months in the freezer and 2–4 weeks in the pantry.
Storage chart
| Type | Pantry | Fridge | Freezer |
|---|---|---|---|
| shell or no shell | 2–4 weeks | 9–12 months | 24 months |
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.
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 do walnuts last in the fridge?
9–12 months in the refrigerator at 40°F (4°C) or below, according to USDA FoodKeeper data.
Can you freeze walnuts?
Yes. Frozen at 0°F (−18°C), walnuts keep best quality for 24 months. Frozen food stays safe indefinitely; the time is for taste and texture.
How long do walnuts last at room temperature?
2–4 weeks in a cool, dry pantry.
How can I tell if walnuts have gone bad?
Throw them 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.