Food in a closed refrigerator is generally safe for about 4 hours without power, while a full freezer can keep food safe for up to 48 hours if the door stays shut. After those time windows—or if food has been above 40°F (about 4°C) for more than 2 hours—it should usually be thrown out to avoid foodborne illness.

How long is food good in fridge without power?

  • Refrigerators typically keep food at a safe temperature (40°F / 4°C or below) for up to 4 hours if you do not open the door.
  • A full freezer can keep food frozen and safe for about 48 hours, and a half-full freezer for about 24 hours, as long as you keep the door closed.
  • Perishable foods (meat, poultry, fish, eggs, dairy, leftovers) that have been above 40°F for more than 2 hours should be discarded, even if they look and smell normal.

What you can usually keep vs toss

Often safe to keep (if still cold, ideally under 40°F):

  • Hard cheeses, butter, margarine
  • Whole fruits and most raw vegetables
  • Unopened canned or shelf-stable items that were in the fridge for convenience

Usually toss if over 40°F for more than 2 hours:

  • Raw or cooked meat, poultry, fish, deli meats
  • Eggs and egg dishes
  • Milk, yogurt, soft cheeses, cream-based sauces
  • Cooked leftovers, casseroles, soups, stews

Quick safety checks

  • If you have a fridge or freezer thermometer , keep or refreeze food that stayed at or below 40°F; discard anything that went above that for more than 2 hours.
  • Do not taste food to see if it is still good; smell, appearance, or taste may not reveal dangerous bacteria.
  • When in doubt, it is safer to throw it out, especially for high-risk foods like meat, seafood, eggs, milk, and leftovers.

Tips to stretch that safe window

  • Keep doors closed as much as possible to trap cold air; frequent opening can cut the safe time significantly.
  • Group frozen foods together and avoid moving them; a packed freezer holds cold longer than a nearly empty one.
  • If outages are common where you live, consider keeping appliance thermometers in both fridge and freezer so you can check after the power comes back.

Bottom line: For “how long is food good in fridge without power,” the key numbers are about 4 hours for the fridge, 24–48 hours for the freezer (depending on how full it is), with 40°F as the safety cutoff.

Information gathered from public forums or data available on the internet and portrayed here.