How to Store Flour Long-Term
Store flour airtight in a cool, dark, dry place, and it keeps for months; white flour longer than whole-grain. For long-term storage, vacuum-seal it or freeze it, which also kills any pest eggs. Whole-grain flour is best refrigerated or frozen.
Flour seems shelf-stable, but it stales, goes rancid (especially whole-grain), and attracts pantry pests. A little care keeps it fresh far longer.
Airtight, cool and dark
Move flour out of its paper bag into an airtight container, and keep it somewhere cool, dark and dry. Heat, light and humidity all speed staling. A vacuum container or sealed canister works well.
White vs whole-grain
| Flour | Pantry (airtight) | Freezer |
|---|---|---|
| White flour | ~1 year | Longer |
| Whole-grain flour | A few months | Best kept frozen |
Whole-grain flour keeps the germ and its oils, which go rancid faster, so refrigerate or freeze it.
See how long flour lasts, and for fresh-milled flour, how to store fresh-milled flour.
Frequently asked questions
How long does flour last in storage?
Airtight and cool, white flour keeps roughly a year, whole-grain a few months (its oils go rancid faster). Freezing or vacuum sealing extends both.
How do I keep bugs out of flour?
Store it airtight, keep the pantry cool and dry, and freeze new flour for a few days to kill any eggs. Airtight containers stop pests spreading.