Eggs that are past their printed date are often still safe to eat, but the date on the carton is not a safety deadline. In the United States, the date you see is usually a “sell-by” or “best by” date that tells the store how long to display the eggs, not the last day they are safe. Properly refrigerated eggs can stay safe and good quality for weeks after that date. What actually matters is how the eggs were stored and whether they have gone bad.
What Does The Date On An Egg Carton Actually Mean?
Most dates printed on egg cartons are about quality and store rotation, not food safety.
In the US, egg cartons often carry a “sell-by” or “best by” date. A sell-by date tells the retailer how long to keep the eggs on the shelf. It is not a deadline for you at home. A best-by date is about peak quality, meaning flavor and texture, not whether the eggs are safe.
Some cartons also show a three-digit code called the Julian date. This marks the day the eggs were packed. Day 001 is January 1, and day 365 is December 31. This code is more useful than the sell-by date because it tells you how old the eggs actually are.
The word “expiration” gets used loosely here. For eggs, there is rarely a true safety expiration date on the carton. The date is a guideline, and the real test is how the eggs look, smell, and behave when you check them.
How Long Are Eggs Safe After The Date?
Refrigerated eggs generally keep safe for three to five weeks from the day you bring them home, even if the carton date has passed.
This timeline comes from US food safety guidance. The key word is refrigerated. Eggs stored at room temperature age far faster and become risky much sooner.
A few things affect how long eggs last:
- Temperature. Eggs kept at a steady 40°F (4°C) or below last much longer than eggs left on the counter.
- Consistency. Moving eggs in and out of the fridge causes condensation on the shell, which can help bacteria move through the shell.
- Handling. Cracked or dirty eggs should be used right away or thrown out.
- Processing. In the US, eggs are usually washed, which removes a natural protective coating. That is one reason US eggs are refrigerated while eggs in some other countries are not.
The date on the carton is a rough guide. The three-to-five-week window from purchase is the number that matters more for safety.
Can You Eat Eggs That Are Out Of Date?
Yes, in many cases you can eat eggs past their date, as long as they were refrigerated and pass a simple freshness check.
The date is not the deciding factor. Your senses and a quick water test are more reliable. If an egg looks and smells normal and sinks in water, it is usually fine to cook and eat.
There is one firm rule. If an egg smells rotten or sulfurous, or if the shell is cracked and leaking, throw it out. Do not try to cook a bad egg to make it safe. Heat kills many bacteria, but it does not remove the toxins and spoilage that make a rotten egg unsafe and unpleasant.
How Do You Tell If An Egg Has Gone Bad?
Three simple checks can tell you whether an egg is still good: the water test, the smell test, and a look at the inside.
The water test. Place the egg in a bowl of water. A fresh egg sinks and lies flat on the bottom. An older but still safe egg sinks and stands upright. An egg that floats to the top should be thrown out. This works because the air pocket inside the egg grows as the egg ages and moisture escapes through the shell. A large air pocket makes the egg float.
The smell test. Crack the egg into a bowl and smell it. A fresh egg has little or no smell. A bad egg has a clear rotten or sulfur odor. If it smells off, toss it.
The look test. A fresh egg has a firm yolk and a thick white that stays close to the yolk. As eggs age, the white gets thinner and spreads out. Thin whites alone do not mean the egg is unsafe, but they do mean it is older. Cloudy whites are normal and actually a sign of freshness. A pink, green, or iridescent tint in the white can mean spoilage or bacterial growth, so throw those eggs out.
Why Do Eggs Float And What Does It Really Tell You?
Floating does not mean an egg is spoiled. It means the egg is old and has lost moisture, so the air pocket inside has grown large.
The shell of an egg is porous. Over time, water and carbon dioxide escape through tiny holes, and air moves in to replace them. This is a normal part of aging. The bigger the air pocket, the more buoyant the egg becomes.
A floating egg is a strong sign it is old, and old eggs are more likely to have spoiled. Because you cannot be sure how it was stored, the safe choice is to throw a floating egg away. An egg that sinks but stands upright is older but usually still fine for cooking, especially in baked goods where the texture of the white does not matter.
Does Cooking Make Old Eggs Safe?
Cooking kills bacteria like Salmonella, but it does not make a spoiled egg safe to eat.
Heat is effective against bacteria. Thorough cooking until both the yolk and white are firm reduces the risk from Salmonella, which is the main germ of concern in eggs. This is why food safety guidance recommends cooking eggs thoroughly for people at higher risk, including young children, pregnant women, older adults, and anyone with a weakened immune system.
But spoilage is a different problem. When an egg goes bad, bacteria break down the egg and produce compounds that cause the rotten smell and can make you sick. Cooking does not remove those compounds. A rotten egg stays unsafe and unpalatable no matter how long you cook it.
So the rule is simple. Old but not spoiled eggs can be cooked and eaten. Spoiled eggs should be thrown out, not cooked.
Who Should Be More Careful With Older Eggs?
Some people should stick to fresh eggs and avoid eating eggs past their date.
Eggs can carry Salmonella, and the risk, while low for most healthy adults, is higher for certain groups. Food safety guidance advises these groups to avoid raw or lightly cooked eggs and to cook eggs until firm:
- Pregnant women
- Young children
- Older adults
- People with weakened immune systems
For these groups, using eggs within the recommended window and cooking them thoroughly is the safer choice. When in doubt, throw the egg out. The cost of one egg is not worth a foodborne illness.
How Should You Store Eggs To Make Them Last?
Store eggs in their original carton in the main part of the refrigerator, not in the door.
The door is the warmest part of the fridge because it opens and closes often. The main shelves hold a steadier, colder temperature. Keeping eggs in the carton also protects them from picking up odors from other foods and keeps the date code handy.
Do not wash eggs at home before storing them. In the US, eggs are already washed and sanitized before they are sold, which removes the shell’s natural protective coating. Washing them again can push bacteria through the shell. If an egg is dirty, use it right away or discard it.
For longer storage, eggs can be frozen, but not in the shell. Crack them, beat the yolks and whites together, and freeze them in a sealed container. Frozen eggs are best used within about a year for quality, though this is a quality guideline rather than a strict safety limit.
Frequently Asked Questions
Can you eat eggs that are a week out of date?
Yes, in most cases. Refrigerated eggs are generally safe for three to five weeks from purchase, so a week past the carton date is usually fine if the eggs pass a smell and water test.
How long after the sell-by date are eggs still good?
Eggs are typically safe for three to five weeks from the day you buy them, which is often well past the sell-by date. The exact time depends on how they were stored.
What happens if you eat a bad egg?
Eating a spoiled egg can cause food poisoning with nausea, vomiting, diarrhea, and stomach cramps. If you are unsure whether an egg is bad, throw it out rather than risk getting sick.
Does a floating egg mean it is bad?
A floating egg is old, not necessarily spoiled, because the air pocket inside has grown. Because you cannot be sure it is safe, the recommended choice is to throw a floating egg away.
