How long does Pineapple last in the fridge? 5–7 days

In the fridge: 5–7 days · In the freezer: 10–12 months

Where	Counted from	How long
Pantry (Until Ripe, then 1-2 days. Ripe is when this item is tender, fully developed and ready to eat.)	By the date on the package	When ripe
Refrigerator (Timeline for refrigerator applies to ripe fruit.)	By the date on the package	5–7 days
Freezer	By the date on the package	10–12 months

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.