How long do potatoes last?

Checked 24 Oct 20265 official publishers, 10 sources

Fresh: 1-2 weeks in the fridge, 10-12 months in the freezer for best quality and 1 month in the pantry.

Storage times for potatoes by state and place
StateCounter / pantryFridge 40 °FFreezer 0 °F
Fresh 1 month Extension Sources disagree: 1-2 months; 2 months FoodKeeperExtension 1-2 weeks FoodKeeper Extension 10-12 months best quality Extension
Cooked or mashed 2 hours max CDC 3-4 days FoodKeeper 1-2 months best quality FoodKeeper Also stated: 10-12 months FoodKeeper
Frozen potato products Not stated Not recommended FoodKeeper 8 months best quality Extension Sources disagree: 12 months FoodKeeper
Instant, unopened 10-15 months FoodKeeper Not stated Not stated
Instant, opened 6-12 months FoodKeeper Not stated Not stated
Times assume continuous refrigeration at 40 °F or below. When in doubt, throw it out. Freezer times are for quality: “Because freezing 0° F (-18° C) keeps food safe indefinitely, the following recommended storage times are for quality only.” FDA

Sources compared

SourceStateCounter / pantryFridgeFreezer
USDA FSIS (FoodKeeper) 2018Fresh1-2 months1-2 weeks-
Nebraska ExtensionFresh1 month-10-12 months
National Center for Home Food Preservation (University of Georgia)Fresh2 months1-2 weeks-
USDA FSIS (FoodKeeper) 2018Cooked or mashed--10-12 months
USDA FSIS (FoodKeeper) 2018Cooked or mashed-3-4 days1-2 months
CDC 2025Cooked or mashed2 hours--
USDA FSIS (FoodKeeper) 2018Frozen potato products-Not recommended12 months
Utah State University ExtensionFrozen potato products--8 months
USDA FSIS (FoodKeeper) 2018Instant, unopened10-15 months--
USDA FSIS (FoodKeeper) 2018Instant, opened6-12 months--

A dash means that source gives no time for that place.

Handling and freezing notes

  • This is the recommended storage method for whole potatoes. FoodKeeper
  • The United States Potato Board notes refrigeration can cause potatoes to darken during cooking and to develop an unpleasantly sweet taste. FoodKeeper
  • Freezer timeline applies to cooked and mashed potatoes. FoodKeeper
  • Not recommended to refrigerate after cooking due to decreased quality. FoodKeeper
  • Keep frozen. For safety, cook as directed. FoodKeeper
  • “Fresh potato ventilated boxes or bags 35-40°F moderately moist pit or cellar 6 months” Extension
  • “cook and mash them, stuff them, or scallop them for freezer storage ... they will retain best quality only for a few weeks in the freezer” Extension
  • “Irish potatoes, baked or boiled In soups, salads, sauces or with butter Soft, crumbly, water-logged, mealy” Extension
  • “Select smooth new potatoes directly from the garden. Peel or scrape and wash. Water blanch for 3 to 5 minutes, depending on the size.” Extension

What the sources say

For fresh potatoes kept in the pantry, the sources give 1 to 2 months: FoodKeeper says 1 to 2 months from purchase, the Nebraska Extension chart 1 month, and the National Center for Home Food Preservation up to 2 months in a cupboard at 50 to 70 °F.123

FoodKeeper calls the pantry the recommended storage method for whole potatoes.1

In the refrigerator, FoodKeeper and the National Center both give 1 to 2 weeks; the National Center says the cold is likely to diminish their quality, and FoodKeeper cites the United States Potato Board on potatoes darkening during cooking and developing an unpleasantly sweet taste.13

The Nebraska chart lists 10 to 12 months in the freezer for potatoes, and the National Center freezes new potatoes after a water blanch of 3 to 5 minutes, depending on their size.210

For cooked and mashed potatoes, FoodKeeper gives 10 to 12 months in the freezer, while its leftovers entry, which names potatoes, gives 3 to 4 days in the fridge and 1 to 2 months frozen.14

The National Center is more cautious: mashed, stuffed or scalloped potatoes keep best quality for only a few weeks in the freezer, and baked or boiled potatoes can turn soft, crumbly, water-logged and mealy after thawing.39

Commercial frozen potato products such as fries, hash browns and tater tots get 12 months in the freezer from FoodKeeper, and frozen potato in its original package gets 8 months from Utah State University Extension.67

FoodKeeper says to cook them as directed and does not recommend refrigerating them after cooking, because of decreased quality.6

Instant potatoes keep 10 to 15 months in the pantry unopened and 6 to 12 months after opening.8

Utah State lists 6 months for fresh potatoes kept in ventilated boxes or bags in a moderately moist pit or cellar at 35 to 40 °F.7

Rules that apply here

Freezing and refreezingFridge and freezer temperatureThe 2-hour rule
Sweet potatoesOnionsCooked rice

Sources

  1. USDA FoodKeeper data v128, product 297: Potatoes. USDA FSIS (FoodKeeper). Dated 2018-09-06. Checked 2026-10-24. Potatoes. Pantry: - (This is the recommended storage method for whole potatoes.); DOP_Pantry: 1-2 Months; Refrigerate: - (The United States Potato Board notes refrigeration can cause potatoes to darken during cooking and to develop an unpleasantly sweet taste.); DOP_Refrigerate: 1-2 Weeks; Freeze: 10-12 Months (Freezer timeline applies to cooked and mashed potatoes.)
  2. Home Food Storage | UNL Food | Nebraska. Nebraska Extension. No date on the page. Checked 2026-10-24. Potatoes 1 month - 10 to 12 months (freezing potatoes)
  3. Preserving Potatoes - National Center for Home Food Preservation. National Center for Home Food Preservation (University of Georgia). No date on the page. Checked 2026-10-24. It's easy enough to store fresh white potatoes for up to 2 months in a cupboard kept at 50-70°Fstoring white potatoes in a refrigerator is likely to diminish their quality and they are expected to last only 1-2 weeks therecook and mash them, stuff them, or scallop them for freezer storage ... they will retain best quality only for a few weeks in the freezer
  4. USDA FoodKeeper data v128, product 174: Leftovers, without meat, fish, poultry, or egg (such as cooked vegitables, rice, or potatoes). USDA FSIS (FoodKeeper). Dated 2018-09-06. Checked 2026-10-24. Leftovers, without meat, fish, poultry, or egg (such as cooked vegitables, rice, or potatoes). Refrigerate: 3-4 Days; Freeze: 1-2 Months
  5. Preventing Food Poisoning | Food Safety | CDC. CDC. Dated 2025-11-24. Checked 2026-10-24. Never leave perishable food out for more than 2 hours (or 1 hour if exposed to temperatures above 90°F).
  6. USDA FoodKeeper data v128, product 313: Frozen potato products, fries, hashbrowns, tater tots. USDA FSIS (FoodKeeper). Dated 2018-09-06. Checked 2026-10-24. Frozen potato products, fries, hashbrowns, tater tots. Refrigerate: Not Recommended (Not recommended to refrigerate after cooking due to decreased quality.); DOP_Freeze: 12 Months (Keep frozen. For safety, cook as directed.)
  7. Food Storage in Home | USU. Utah State University Extension. No date on the page. Checked 2026-10-24. Frozen potato original package 0°F freezer 8 monthsFresh potato ventilated boxes or bags 35-40°F moderately moist pit or cellar 6 months
  8. USDA FoodKeeper data v128, product 393: Potatoes, instant. USDA FSIS (FoodKeeper). Dated 2018-09-06. Checked 2026-10-24. Potatoes, instant. DOP_Pantry: 10-15 Months; Pantry_After_Opening: 6-12 Months
  9. Foods That Do Not Freeze Well - National Center for Home Food Preservation. National Center for Home Food Preservation (University of Georgia). No date on the page. Checked 2026-10-24. Irish potatoes, baked or boiled In soups, salads, sauces or with butter Soft, crumbly, water-logged, mealy
  10. Freezing New Irish Potatoes - National Center for Home Food Preservation. National Center for Home Food Preservation (University of Georgia). No date on the page. Checked 2026-10-24. Select smooth new potatoes directly from the garden. Peel or scrape and wash. Water blanch for 3 to 5 minutes, depending on the size.
  11. REFRIGERATOR & FREEZER STORAGE CHART. FDA. Dated 2018-03-01. Checked 2026-10-24. Because freezing 0° F (-18° C) keeps food safe indefinitely, the following recommended storage times are for quality only.