How long does Potatoes last in the fridge? 1–2 weeks

In the fridge: 1–2 weeks · In the freezer: 10–12 months

Where	Counted from	How long
Pantry	From purchase	1–2 months
Refrigerator	From purchase	1–2 weeks
Freezer (Freezer timeline applies to cooked and mashed potatoes.)	By the date on the package	10–12 months

This is the recommended storage method for whole potatoes.
The United States Potato Board notes refrigeration can cause potatoes to darken during cooking and to develop an unpleasantly sweet taste.

Source: the USDA's FoodKeeper (USDA FSIS), open data. The times are for quality and safety in a refrigerator at 4°C (40°F) or below and a freezer at -18°C (0°F); if something looks or smells spoiled, throw it out.