How Long Do Potatoes Last? (Raw, Cooked, Fridge and Freezer)

It depends on two things: whether the potato is raw or cooked, and how cool and dark you can keep it. A raw potato on a warm counter lasts days to a couple of weeks. The same potato in a cool cupboard can last months. Once it’s cooked, the clock drops to a few days.

Here’s how long potatoes last in each situation, based on guidance from USDA, university extension services and the potato industry.

Potato	Where it’s stored	How long it lasts
Whole, raw	Room temperature	About 2 weeks
Whole, raw	Cool, dark, ventilated spot (45 to 50°F)	Up to 3 months or longer
Whole, raw	Refrigerator	Longer than a cupboard; UK waste charity WRAP says about three times as long
Peeled or cut, raw	In cold water, in the fridge	Up to 24 hours
Cooked (mashed, baked, boiled, roasted, fries)	Refrigerator	3 to 4 days
Cooked	Freezer	Safe indefinitely at 0°F; best quality within a few weeks
Whole, raw	Freezer	Not recommended unless blanched first

The room-temperature and cool-storage figures come from Iowa State University Extension. The 24-hour limit for cut potatoes is the Idaho Potato Commission’s. The cooked times follow the USDA’s rules for leftovers, and the freezer notes come from Penn State Extension.

The rest of this guide explains the numbers, clears up the fridge question, and helps you decide what to do with a potato that’s gone green or grown sprouts.

Raw potatoes: why cool and dark matters more than anything

Potatoes are alive after they’re dug up. They breathe, lose moisture and, given warmth and light, start trying to grow. Every storage tip is about slowing that down.

Iowa State University Extension recommends a spot that’s cool (45 to 50°F), dark, dry and well ventilated. There, potatoes last up to three months or longer. At room temperature, the extension service puts it at about two weeks.

Each condition does its own job:

• Cool slows sprouting and moisture loss. The Idaho Potato Commission recommends keeping potatoes at about 45 to 50°F, cooler than room temperature but warmer than a fridge.
• Dark stops greening. Light triggers the potato to make chlorophyll, and the Idaho Potato Commission notes too much light turns skins green and bitter. The green itself is harmless, but it’s a sign that natural toxins called glycoalkaloids may be building up too (more on that below).
• Dry prevents mold and rot. A damp potato spoils fast.
• Ventilated lets moisture escape. Poison Control advises against sealed containers for potatoes.

Few homes have a spot that sits at exactly 45 to 50°F. An unheated basement, a cool garage shelf in autumn, or a cupboard on an outside wall gets you closer than a cabinet next to the oven or dishwasher.

Should you keep potatoes in the fridge?

This is the part where the advice has shifted, and where US and UK sources now disagree. Both sides have a point.

The case against: For years, food agencies and potato growers told people not to refrigerate raw potatoes. The Idaho Potato Commission still says never to refrigerate fresh potatoes, because fridge temperatures turn some of the starch to sugar. That extra sugar can make potatoes taste sweeter than expected and brown faster when you fry or roast them. The worry was that the extra sugar would also raise acrylamide, a chemical that forms when starchy foods are cooked at high heat.

The case for: In February 2023, the UK Food Standards Agency changed its advice. After its Committee on Toxicity reviewed new research, the FSA concluded that storing raw potatoes in a home fridge, compared with a cool dark place, “does not substantially increase the potential for acrylamide formation.” It now says fridge storage is fine. WRAP, the UK waste charity behind Love Food Hate Waste, says potatoes keep about three times as long in the fridge as in a cupboard.

What that means for you:

• If you have a cool, dark cupboard or basement, use it. That’s what both camps are happy with, and the potatoes taste the way they should.
• If your kitchen is warm, or you tend to buy a big bag and use it slowly, the fridge is a reasonable choice. It will keep them firm longer.
• If you refrigerate potatoes, expect them to taste a little sweeter and brown faster. Many cooks prefer them for boiling, mashing and soups rather than fries or crisp roasting. Cooking to a golden color rather than dark brown is the usual advice for keeping acrylamide down with any potato.

Either way, keep them in a paper bag or open container in the fridge rather than sealed plastic, so moisture doesn’t collect.

Where to keep potatoes in a small kitchen with no pantry

Plenty of apartments have no pantry, no basement and a cabinet or two that sit right above the dishwasher. A few practical options:

• A lower cabinet on an outside wall. It’s usually the coolest cupboard you have. Keep potatoes away from the one under the sink if there are pipes that sweat.
• A paper bag or breathable basket. A brown paper grocery bag with the top loosely folded blocks light and still lets moisture out. A lidded basket with gaps works too.
• Away from onions. Poison Control lists storing potatoes apart from onions among its tips, and it’s a common rule in kitchens. Keeping them in separate baskets is easy.
• Not on top of the fridge. The top of a fridge is warm from the compressor, and it’s often bright.

If you’re short on space, our guides to organizing a small kitchen with no pantry and small kitchen cabinet organization ideas show where root vegetables can live without taking over the counter. Vertical storage like stacking baskets can also give onions and potatoes their own tiers.

For solo cooks, the simplest fix is buying fewer at a time. A 10-pound bag is cheaper per pound, but not if half of it sprouts. Buying loose potatoes, which WRAP recommends, lets you take only what you’ll use in a week or two. Our guide to stocking a small kitchen for solo cooking has more on buying staples in sizes that suit one person.

One more habit: don’t wash potatoes before you store them. Brush off loose dirt if you like, but save the washing for right before you cook, since moisture on the skin encourages rot.

Peeled and cut potatoes

Once peeled or cut, a raw potato starts to turn gray or brown as it meets the air. The common fix is to keep it under water.

The Idaho Potato Commission recommends no more than 24 hours for peeled potatoes held in water. Keep the water cold, in the fridge, and add ice if you like. To help stop discoloration, the commission suggests adding about 1 tablespoon of lemon juice or white wine vinegar per gallon of water.

This is handy for holiday cooking: peel and cut the night before, cover them with cold water in a big bowl or stockpot with a lid, and refrigerate. Drain and cook the next day. If you peel a lot of potatoes, an electric potato peeler or a mandoline slicer speeds up the prep, and our guide on how to use a mandoline covers doing it safely.

Cooked potatoes: how long leftovers last

Cooked potatoes fall under the USDA’s standard rules for leftovers:

1. Refrigerate within 2 hours of cooking, or within 1 hour if the room or outdoor temperature is above 90°F.
2. Cool them quickly. The USDA recommends dividing large amounts into shallow containers so they get out of the 40 to 140°F danger zone faster. A big pot of mashed potatoes cools slowly in the middle.
3. Eat within 3 to 4 days.
4. Reheat to 165°F. A meat thermometer works just as well on a bowl of mashed potatoes as on a roast.

That covers mashed, boiled, roasted, baked and fried potatoes, as well as potato salad and casseroles. Potato salad served at a picnic or balcony barbecue falls under the same 2-hour limit (1 hour in the heat), so don’t pack the leftovers home after an afternoon in the sun.

Shallow airtight food storage containers are the best way to store them. The same 3-to-4-day window applies to most cooked foods, including cooked chicken.

A warning about foil-wrapped baked potatoes

Baked potatoes left wrapped in foil at room temperature have caused botulism outbreaks. It’s rare, but serious. The University of California’s Master Food Preservers explain that foil holds in moisture and warmth and keeps the potato in the danger zone, which suits Clostridium botulinum.

Their advice is to take the foil off as soon as the potatoes come out of the oven or off the grill. If you’re not eating them right away, refrigerate them unwrapped so they cool quickly, and follow the 2-hour rule.

Can you freeze potatoes?

Yes, but not raw. Penn State Extension explains that when a raw potato freezes, the water separates from the starch, and the thawed potato turns watery and grainy. Here’s what works instead, according to its guidance:

What you’re freezing	How to prepare it	Notes from Penn State Extension
Small whole potatoes	Blanch 4 to 6 minutes if under 1 to 1.5 inches across; 8 to 10 minutes if larger	Use waxy red or gold potatoes; cook from frozen in boiling water about 15 minutes
Homemade french fries	Cut 3/8-inch strips, rinse, then fry at 360°F for about 5 minutes (not browned) or bake at 450°F until golden	Tray-freeze, then bake at 475°F to serve
Mashed potatoes	Mix in butter, cream or sour cream first	Freeze as patties or in bulk
Scalloped potatoes	Bake until nearly tender, then freeze in the dish	Reheat at 400°F
Stuffed baked potatoes	Freeze after stuffing	Use within 2 to 4 weeks; bake at 425°F for about 30 minutes from frozen

About timing: the USDA says food kept frozen at 0°F stays safe indefinitely, with the months on freezer charts (2 to 6 for most leftovers) being about quality. Penn State warns that cooked potatoes lose flavor quickly in the freezer and are best within a few weeks. Safety and taste are two different clocks.

A vacuum sealer, including the models built for sous vide, helps frozen potatoes keep better by cutting down on freezer burn. For crispy fries without a deep fryer, an air fryer does the job; see our guide to cooking frozen french fries in an air fryer, which works just as well for your own par-cooked batch.

How to tell if potatoes have gone bad

Most spoiled potatoes are easy to spot. Throw a raw potato out if it:

• Feels soft, mushy or spongy all the way through, not just wrinkly on the surface
• Smells musty, sour or rotten. One rotten potato can make a whole bag smell, so check the rest and remove it quickly.
• Oozes liquid or has wet, dark patches
• Shows mold, fuzzy spots of any color
• Is badly shriveled with long sprouts, which Iowa State flags as a potato past saving

A potato that is slightly wrinkled but still firm has lost some moisture and is usually fine to eat. Small dark spots or bruises can be cut out with a paring knife.

For cooked potatoes, the rule is simpler. Past 3 to 4 days in the fridge, throw them away, even if they look and smell fine. The bacteria that cause food poisoning don’t always change how food looks or smells.

Green potatoes and sprouts: when to cut, when to toss

Potatoes naturally contain glycoalkaloids, mainly solanine and chaconine. According to Iowa State University Extension, these are found throughout the potato but are most concentrated in the sprouts, green skin and the area around the eyes. Poison Control adds that the white flesh has the lowest levels.

In large amounts, they cause real symptoms. Poison Control lists vomiting, abdominal pain, diarrhea and headache, and in some cases flushing, confusion and fever. Symptoms usually start within a few hours, but can take up to a day.

Two facts matter most in the kitchen:

1. Cooking doesn’t make them safe. Both Iowa State and Poison Control say baking, boiling, frying and microwaving don’t destroy glycoalkaloids.
2. Peeling and trimming help. Poison Control notes that peeling reduces the amount, since so much sits in and just under the skin.

Here’s how to decide, based on Iowa State’s guidance:

What you see	What to do
Firm potato, a few small sprouts	Cut out the sprouts and eyes deeply, then cook
Firm potato, a small green patch on the skin	Peel and cut away all the green, then cook
Green color that runs deep under the skin	Throw it out
Long sprouts (1 inch or more) and a soft or shriveled potato	Throw it out
Tastes bitter after cooking	Stop eating it

If you’re ever unsure, Poison Control’s rule is the one to follow: “when in doubt, throw them out.” Potatoes are cheap; a bad night isn’t.

Kids are smaller, so the same amount of glycoalkaloid is a bigger dose for them. Be stricter with anything that’s going on a child’s plate.

Before you put the bag away

When you get home from the store, take a minute before the potatoes go in the cupboard. Tip them out, set aside any with cuts, soft spots or green patches to use first, and move the rest into a paper bag or basket somewhere cool and dark. That one habit catches the potato that would have rotted the whole bag, and it’s the easiest way to get the full two weeks, or two months, out of what you bought.

Planning meals around what you have? Our easy meal prep ideas for one person in a small kitchen include ways to use up a bag before it sprouts.

Related Guides

• How Long Does Chicken Last in the Fridge?
• Can You Freeze Cream Cheese?
• Best Airtight Food Storage Containers
• How to Organize a Small Kitchen With No Pantry
• How to Use a Vacuum Sealer
• Best Electric Potato Peeler
• How to Cook Frozen French Fries in an Air Fryer

Frequently Asked Questions

How long do potatoes last at room temperature?

Iowa State University Extension says raw potatoes keep for about 2 weeks at room temperature. In a cool, dark, dry, well-ventilated spot at around 45 to 50°F, the same potatoes can last up to three months or longer. Warmth and light are what shorten their life, so a cupboard away from the stove beats a sunny countertop.

Should potatoes be stored in the fridge?

It depends whose advice you follow. The UK Food Standards Agency changed its guidance to say raw potatoes can be stored in the fridge, since research found it doesn't meaningfully raise acrylamide when they're later fried or roasted. US potato growers still advise against it, because fridge temperatures turn some starch to sugar, which can make potatoes taste sweeter and brown faster.

How long do cooked potatoes last in the fridge?

Cooked potatoes, including mashed, baked, boiled and roasted, last 3 to 4 days in the fridge, which is the USDA's general guidance for cooked leftovers. Refrigerate them within 2 hours of cooking, or within 1 hour if it's above 90°F. Store them in shallow, covered containers so they cool quickly, and reheat to 165°F.

Is it safe to eat a potato that has sprouted?

Usually, if the potato is still firm and the sprouts are small. Iowa State University Extension advises cutting away the sprouts and any green parts before cooking. Throw the potato out if the sprouts are an inch or longer and the potato has gone soft or shriveled, or if green color runs deep beneath the skin.

Can you freeze raw potatoes?

Not well. Penn State Extension explains that freezing separates the water from the starch in raw potatoes, so they turn watery when reheated. Blanching them first, or freezing them already cooked, works much better. Small waxy potatoes can be blanched whole, homemade fries can be par-cooked, and mashed potatoes freeze best with butter or cream mixed in.