Power Outage: Is Food in the Fridge Still Safe?

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Content updated 2026-10-26

All 13 detected claims in the English guide have exact source mappings. This automated source comparison is not professional review or a guarantee about an individual food. Claims outside this detector and human review remain separate.

Keep refrigerator and freezer doors closed. An unopened refrigerator keeps food cold for about 4 hours; a closed full freezer about 48 hours, or 24 hours if half full. These are estimates, not proof that a particular food stayed safe. USDA — During an Emergency.

Power outage food safety checker

Use outage hours and door status as estimates. Check the temperature and exact food row in the official chart before keeping or refreezing food; hours alone cannot establish safety.

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Source: FoodSafety.gov — Food Safety During Power Outage.

Power outage reference card

US guidance. Closed-door estimates are approximate, not a safety verdict. Check the official food-by-food chart and package instructions.

Keep fridge and freezer doors shut as much as possible.
An unopened fridge keeps food cold for about 4 hours. A closed full freezer: about 48 hours; half-full: about 24 hours.
Common fridge perishables: discard after 4 hours without power unless another cold source kept them at or below 40°F / 4°C. For measured warm exposure, use the refrigerated-food chart (above 40°F for more than 2 hours). These are different clocks.
Frozen foods: follow each food row for ice crystals or a measured temperature at or below 40°F / 4°C. Ice cream and frozen yogurt must be discarded even in that column. Warmer-food decisions also vary by food.
Do not taste food to determine its safety; evaluate each food with the official chart.

Outage started: __________ Temperature/time checked: __________

FoodSafety.gov · Source checked: 2026-10-26 · US

FoodSafety.gov — Power outage reference card

During the outage

Keep doors closed and use appliance thermometers. If the outage continues, use a cooler with ice or another verified cold source to keep refrigerated food at 40°F (4°C) or below. Do not taste food to decide whether it is safe. USDA — During / After an Emergency.

Refrigerated food

Without a verified cold source, federal emergency guidance says to discard common refrigerator perishables after 4 hours without power. The detailed chart also gives food-specific decisions for exposure above 40°F (4°C) for more than 2 hours. Outage duration does not measure time above that temperature. FoodSafety.gov — Refrigerated Food and Power Outages.

Meat, poultry, fish, milk, eggs and cooked leftovers are among the foods the refrigerator chart says to discard after that warm exposure. Hard cheese, whole uncut fruit and some commercial condiments have different rows; a broad “lower risk” label cannot approve every item. FoodSafety.gov — exact refrigerated-food rows.

Frozen food and refreezing

Check the exact frozen-food row. Many foods that still contain ice crystals or stayed at 40°F (4°C) or below may be refrozen, with quality loss. Ice cream and frozen yogurt are exceptions: the chart says discard. FoodSafety.gov — Frozen Food and Power Outages.

If food warmed above that temperature, follow its individual row rather than a universal freezer discard clock. When you cannot establish the conditions needed by that row, do not use outage hours alone as permission to keep or refreeze it. FoodSafety.gov — frozen-food table and chart instructions.

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Guides: Fridge temperature zones · Danger zone

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Sources: FoodSafety.gov — Food Safety During Power Outage , USDA FSIS — Keeping Food Safe During an Emergency , FoodSafety.gov — Food Safety in a Disaster or Emergency . Content updated 2026-10-26. See the exact-source coverage above.