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Freezer without power

How long food stays safe in a freezer during a power outage.

A full freezer keeps food safe for about 48 hours if the door stays closed; a half-full freezer about 24. Answer two quick questions to get your safe window, then follow the food-safety rules below.

Your situation

Based on USDA and FDA guidance: a full freezer keeps food safe about 48 hours, a half-full freezer about 24 hours, as long as the door stays closed.

Estimated safe window:

h

day(s) โ€” keep the door closed

Keep food safe:
  • Keep the freezer and fridge doors closed โ€” a closed freezer keeps food safe much longer.
  • Group food together: a full freezer stays cold longer.
  • Never taste food to check it: when in doubt, throw it out. Food that still contains ice crystals can usually be refrozen.
  • Block ice or frozen water bottles in the fridge help keep it cold during an outage.

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Planning aid only. This tool gives general estimates and standard procedures โ€” not legal, financial or medical advice. In a life-threatening situation, call your local emergency number first. Always verify country-specific rules with official sources.

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