How long do Macadamias last in the fridge?
Turning the range into a date
Macadamias 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 by2 weeks to 4 weeks after the day you bought it
- Unopened · in the fridgeUse by12 months after the day you bought it
The methods the USDA actually rates for this item
The USDA rates only 3 of its nine storage methods for this item, and the freezer from the day of purchase, pantry from the day of purchase and refrigerator from the day of purchase are what it rates. The other 6 slots are blank, and a blank is not a zero: it means no published figure, not that the method fails. Macadamia, no shell and shell 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.
- In the freezer24 months
- Unopened · in the pantry2 weeks to 4 weeks
- Unopened · in the fridge12 months
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: Macadamias, 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.
Held at 0 °F food stays safe for as long as it stays frozen, which is why a freezer figure counts as quality on this site whatever the food is. Every figure assumes the food was sound when you stored it, that your refrigerator holds 40 °F or below and your freezer 0 °F or below, and that the package was handled normally.
It is past the date. Now what?
Say the calculator above puts Macadamias, 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 FoodKeeper entry this page is built from prints storage times and nothing else, so anything past them here is USDA and FSIS guidance rather than a figure from the source. 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 Macadamias, no shell in one state and they disagree: 12 months in the fridge against 2 weeks to 4 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.
Is that a long time?
10 items in the Shelf Stable Foods list keep exactly as long as this item, 12 months, so they all share place 38 of 70 rather than being put in an order the data does not support. Among the 340 foods the USDA also gives a refrigerator figure, it keeps longer than 92% of them.
Items that behave the same way
All 6 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.
Products the USDA rates in the same places
12 other products are rated in exactly these places — freezer from the day of purchase, pantry from the day of purchase and refrigerator from the day of purchase — out of the 466 in the file, so this is an uncommon shape of record. The nearest of them by keeping time are Pistachios, Walnuts and Almonds. They are listed below with their own answers, closest first, which is why this list differs from the one on their pages. Of the ones shown, none keeps longer than this one does.
- Pistachios12 months sealed in the fridge
- Walnuts9 months sealed in the fridge
- Almonds8 months sealed in the fridgeno shell
- Cashews6 months sealed in the fridge
- Onions2 months sealed in the fridgeyellow, white, red, etc.
- Garlic1 month sealed in the pantry
- Ginger root2 weeks sealed in the fridge
- Rutabagas2 weeks sealed in the fridge
The rest of the Shelf Stable Foods shelf
The USDA puts this product on the Shelf Stable Foods shelf together with 69 others, and 37 of them keep longer outside the freezer. The shelf runs from Coconut cream at 5 years down to Polenta at 7 days. Nearest this product by window are Cereal, Toaster pastries and Peanuts, which is the order the list below is printed in. Across the whole of Shelf Stable Foods the same product ranks 38 of 70. The middle of the shelf is Sunflower oil, at 1 year. 5 products on this shelf publish no window outside the freezer and stay out of the order.
- Cereal12 months2 months in the pantry once opened
- Toaster pastries12 months1 week in the pantry once opened
- Peanuts12 months12 months sealed in the fridge
- Pistachios12 months12 months sealed in the fridge
- Walnuts12 months9 months sealed in the fridge
- Dry stuffing mix12 months9 months in the pantry
- Sunflower seeds12 months7 months in the fridge once opened
- Grits12 months12 months sealed in the pantry
If it has to keep longer than this
If it has to keep longer than 12 months, the Shelf Stable Foods aisle gives 22 products that hold at least twice as long outside the freezer. The smallest step up is Peanut butter at 24 months against this one's 12 months; after it come Chocolate syrup, Molasses and Popcorn. They are printed below in the order the step gets bigger, not alphabetically. In the other direction, 15 entries in the category keep half as long or less, Fruits, dried and Cashews among them. The largest step the category offers is Sesame seeds at 5 years.
- Peanut butter24 months2 months in the pantry once opened
- Chocolate syrup2 years6 months in the fridge once opened
- Molasses2 years6 months in the pantry once opened
- Popcorn2 years1 year in the pantry once opened
- Black pepper2 years2 years sealed in the pantry
- Cajun seasoning blend2 years1 year sealed in the pantry
- Flaxseed2 years2 years sealed in the pantry
- Almond oil2 years2 years sealed in the fridge
The record this page is built from
This page is built from a single FoodKeeper row, record 440 — the source’s own number for it, not a position — one of the 661 rows in the snapshot. That row fills 3 of the nine storage slots with a time, and the binding figure on it is printed by the source in months, which is the unit this page keeps rather than converting it to days. Every figure here comes from one fixed snapshot, USDA FoodKeeper, retrieved 1 September 2026, and is not refreshed page by page.
Where these numbers come from
How long does this food keep in the refrigerator, in the freezer, in the pantry? Can you freeze it, and how much of its shelf life is left once the package is open? Every answer on this page is the USDA’s own published figure, one of the 9 it keeps per food, and never an estimate of ours.
Every range on this page is published by the USDA FoodKeeper and reproduced unchanged. The multipliers, the rankings, the percentages and the dates are ours, computed from those ranges. Where the source gives a span such as 3 to 5 weeks, comparisons use the upper figure, and the full span is always printed.
Rankings cover only the items the USDA gives a usable figure for, and identical ranges share a place rather than being ordered arbitrarily. Neighbors are chosen by nearest storage time within the same category, never alphabetically: two foods filed next to each other by name usually have nothing to do with each other. The freezer is excluded from ranking because it flattens almost everything.
Where the USDA lists several kinds under one name, they share one page here and every kind keeps its own windows: the source prints them as separate rows, and a page that merged them would be inventing a figure the source never published. Comparisons and the place in the category are computed for the kind the plain name means — the shell egg for eggs, the can for tuna — which is settled name by name rather than by the order the source lists its rows in, and the page names it. Where the plain name means no single kind, the page prints no single figure at all and lists the kinds instead.
Source: USDA FoodKeeper, retrieved 1 September 2026. This site computes every comparison on this page and takes responsibility for it. Found a figure that does not match the source? Tell us on the contact page, with the page and the row — the parsing is mechanical, so a mismatch is our bug and we want it. How the whole site is built, which figures are ours and where the source can be checked is on the method page.
USDA index terms: Macadamia, Macadamias, no shell, 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.