How long do Pistachios last in the fridge?
Turning the range into a date
Pistachios keep 12 months sealed in the fridge. Counting 12 months forward from a date is not arithmetic anyone does reliably in their head. Give the field the day it went into storage.
- In the freezerUse by24 months after the day you bought it
- Unopened · in the pantryUse by3 weeks after the day you bought it
- Unopened · in the fridgeUse by12 months after the day you bought it
The freezer helps less here than you would expect
The freezer buys less here than its reputation suggests: 2 times what the sealed fridge gives, 12 months against 24 months, both still measured in months. For this item freezing is an extension rather than a different way of keeping it. On the same shelf it sits 38 of 70, between Peanuts at 12 months and Walnuts, shell or no shell at 12 months. Shell, no shell and Pistachio are the same food in the source list.
Every storage figure the USDA publishes for this item
All three places the USDA recognizes are rated here — pantry, refrigerator and freezer — which only 65 of the 466 foods in the data manage. The source also indexes it as pista.
- In the freezer24 months
- Unopened · in the pantry3 weeks
- Unopened · in the fridge12 months
What the USDA adds in words
The USDA attaches 2 handling notes to this item, reproduced below word for word. None of them is a storage time: they qualify the figures above rather than replacing them. These are the source's own sentences, not ours, and they are the part of the FoodKeeper record that a table of durations cannot carry.
In the freezer, from the day you bought it. Freezing of this item provides no benefit.
In the refrigerator, from the day you bought it. Refrigeration of this item provides no benefit.
Can you freeze pistachios?
Yes. The USDA gives pistachios 24 months in the freezer from the day you buy them, and held at 0 °F food stays safe beyond that: the figure is about quality. Freeze it well wrapped while it is still well inside its fridge window: the freezer keeps quality, it does not restore it.
How to tell if pistachios have gone bad
Go by the date first: pistachios keep 12 months sealed in the fridge. A sour or off smell, mold, slime or an odd color mean it goes out. The bacteria that make people sick change none of these, so past its window it goes out even if it seems fine. Never taste to test.
Sources: USDA FSIS: the danger zone USDA FSIS: freezing and food safety USDA FSIS: molds on food FDA: are you storing food safely FoodSafety.gov: the FoodKeeper app.
Is it still safe to eat, or just past its best?
The answer at the top of this page reads 12 months in the fridge. What decides that is the food and not the shelf the source files it on: Pistachios, shell or no shell is acid, dry, sweet, alcoholic or pure fat. Past it, whether it has gone bad is yours to judge by look and smell: this window rates quality, not the day it turns hazardous.
It is past the date. Now what?
Say the calculator above puts Pistachios, shell or no shell past its 12 months in the fridge window. Past that the calendar stops deciding and the food itself does. A rancid, paint-like smell in a nut, an oil or a seed, mold around the neck of a bottle, or a swollen can mean it goes out whatever the date says.
The whole rule, including the cases the source does not cover, is set out under what to do when the date has passed.
Two places, and one of them is the wrong one
The USDA rates two places for Pistachios, shell or no shell in one state and they disagree: 12 months in the fridge against 3 weeks in the pantry. This page answers with the refrigerator, the longer of the two. Both figures are the USDA's own, so this is a choice of where to put the food rather than a disagreement about how long it keeps.
Items that behave the same way
All 5 of the 6 items nearest this item keep exactly as long as it does, 12 months, so the ranking around it is a tie rather than an order.
Where these numbers come from
Every storage time on this page is the USDA’s own published figure from the FoodKeeper data, one of the 9 it keeps per food, reproduced unchanged and never an estimate of ours. Where the USDA lists several kinds under one name, each kind keeps its own windows, and the page names the kind its answer is for. The dates and multipliers are ours, computed from those ranges.
Source: USDA FoodKeeper, retrieved 1 September 2026. Found a figure that does not match the source? Tell us on the contact page. How the site is built is on the method page.
USDA index terms: no shell, pista, Pistachio, Pistachios, shell
KeepsUntil is an independent reference built on public USDA data. It is not affiliated with, endorsed by, or connected to the U.S. Department of Agriculture or the Food and Drug Administration. Whether a given window is a safety limit or a quality window is stated on the page that prints it.