How long does Flour (white) last after opening?

Updated 2026-08-07 · Free · No sign-up

Once opened, Flour (white) keeps about 1 year in the fridge. Unopened, it keeps about 6–12 months.

Source: USDA FoodKeeper v128 · Category: Baking & cooking

How long Flour (white) keeps

SituationKeeps for
Unopened · pantry6–12 months
Opened · pantry6–8 months
Opened · fridge1 year

Only situations with a published figure are listed. A blank isn't “forever” — it means no reliable number is published for it.

Storage

How to tell if Flour (white) has gone bad

These are the general spoilage signs for baking & cooking — never taste something to test it. When in doubt, throw it out.

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FAQ

How long does Flour (white) last after opening?

About 1 year refrigerated at 40°F (4°C) or below, according to USDA FoodKeeper v128.

Does Flour (white) need to be refrigerated after opening?

Flour (white) is shelf-stable at room temperature: cool, dry pantry, sealed — refrigerating after opening is optional and mainly preserves quality. Refrigerating it mainly preserves quality rather than safety.

How can you tell if Flour (white) is bad?

Look for: A rancid, paint-like, or musty smell; Clumping, or moisture in something that should be dry; Insects, webbing, or larvae in the package; Faded colour or a lost aroma. Never taste something to test it — when in doubt, throw it out.

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