No, week-old chicken is not safe to eat. Cooked chicken stays safe in the refrigerator for 3 to 4 days, and raw chicken lasts only 1 to 2 days. By day seven, harmful bacteria can reach levels that cause serious foodborne illness, even if the chicken still looks and smells fine.
Why the Limit Is 3 to 4 Days
The official storage guideline from FoodSafety.gov is clear: cooked chicken and other cooked meats belong in the refrigerator for a maximum of 3 to 4 days. This applies to all forms of cooked chicken, including nuggets, patties, shredded breast, rotisserie, and leftovers from any preparation method.
The reason comes down to bacterial growth. Even at proper refrigerator temperatures (40°F or below), certain dangerous bacteria continue to multiply slowly. FDA data shows that Listeria monocytogenes can grow at temperatures as low as 31°F, and some strains of Clostridium botulinum can multiply at temperatures just below 41°F. Both reach concerning levels within about 7 days at refrigerator temperature. The 3-to-4-day guideline builds in a safety margin before those populations get dangerous.
You Can’t Always Tell by Looking or Smelling
This is the most important thing to understand about old chicken: the bacteria that make you sick are not the same organisms that make food smell bad. Spoilage bacteria produce the sour odors, slimy textures, and color changes you associate with rotten food. Pathogens like Salmonella and Campylobacter are invisible, odorless, and tasteless, and it takes very few of them to cause infection.
So if your week-old chicken still smells okay and looks normal, that tells you almost nothing about whether it’s safe. Conversely, chicken that smells sour, sulfurous (like rotten eggs), or feels slimy or sticky is definitely spoiled and should be thrown out immediately. But passing the sniff test does not mean passing the safety test.
Reheating Won’t Fix It
A common assumption is that thoroughly reheating old chicken kills whatever bacteria have grown and makes the food safe again. This is only partly true, and the part that’s wrong is the dangerous part. While high heat does kill most live bacteria, some bacteria produce toxins as they multiply, and those toxins survive cooking. Staphylococcus aureus is a prime example: the bacterium itself dies easily with heat, but its toxins resist boiling and can even survive temperatures above 250°F for 30 minutes. No amount of microwaving or pan-frying will break them down. If toxins have accumulated in chicken sitting for a week, reheating it thoroughly will still make you sick.
What Happens If You Eat It
The most common bacteria associated with poultry each cause a distinct pattern of illness. Clostridium perfringens, which thrives in cooked meat held too long, causes diarrhea and stomach cramps that typically start 6 to 24 hours after eating and resolve within a day. Salmonella triggers diarrhea (sometimes bloody), fever, stomach cramps, and vomiting anywhere from 6 hours to 6 days later. Campylobacter, another common poultry pathogen, causes bloody diarrhea, fever, and cramps that appear 2 to 5 days after exposure.
Most cases of food poisoning resolve on their own within a few days, but they can become serious in young children, older adults, pregnant women, and people with weakened immune systems. Even in healthy adults, a bad case of Salmonella or Campylobacter can mean several miserable days of illness.
How to Store Chicken Safely
Your refrigerator should be set to 40°F (4°C) or below. Use a refrigerator thermometer to verify this, since built-in dials are often inaccurate. Cooked chicken should go into the fridge within two hours of cooking (one hour if the room temperature is above 90°F). Store it in shallow, airtight containers so it cools quickly and evenly.
If you know you won’t eat cooked chicken within 3 to 4 days, freeze it right away. Cooked chicken stored at 0°F stays safe indefinitely, though quality and texture are best within the first 2 to 3 months. Freezing on day one preserves far more quality than freezing on day three when the chicken is already near its limit.
Raw chicken has an even shorter window: just 1 to 2 days in the refrigerator. Whole raw chickens can be frozen for up to a year, and raw chicken parts for up to 9 months.
The Bottom Line on Day Seven
Chicken that has been in the refrigerator for a full week is nearly double the recommended storage time. Dangerous bacteria and their heat-resistant toxins have had ample opportunity to accumulate. It doesn’t matter if it smells fine, looks normal, or gets reheated to a high temperature. Throw it out.