How long does peanut butter last once opened?
Peanut butter (commercially produced, containing hydrogenated fat or other stabilizers, opened) keeps 3-4 months in the refrigerator.
Fridge
After opening
3-4months
Freezer
No known time
-
Pantry
2-3months
Mine has been in the fridge for
Refreeze after thawing in the fridge?
- United States
- Yes
- United Kingdom
- Only after cooking
How long does peanut butter last in the refrigerator?
- Commercially produced, containing hydrogenated fat or other stabilizers, opened3-4 monthsAfter opening
Refrigerators should be set to maintain a temperature of 40 °F or below.
Your fridge should be set between 0 and 5°C.
Other forms
| Form | Fridge | Freezer | Pantry |
|---|---|---|---|
| Commercial | - | - | 6-24 months |
| Commercial, opened | - | - | 2-3 months |
| Commercially produced, containing hydrogenated fat or other stabilizers | 12 months | - | 6-9 months |
| Natural | 12 months | - | - |
| Natural, opened | 3-4 months | - | - |
| General guidance | - | - | - |
Sources
We always show the most cautious time among official sources. Last verified: October 1, 2026.