How Long Unwashed Eggs Stay Fresh in Your Refrigerator

Unwashed eggs last three to five weeks in the refrigerator, while washed eggs last only three to four weeks

The difference comes down to the protective cuticle—a natural coating on the eggshell that seals out bacteria. When you wash an egg, you remove that coating, which is why unwashed eggs keep longer. If your eggs arrived unwashed from a farmer's market or backyard flock, you can store them as-is without reducing their shelf life. If they came from a grocery store, they were already washed during processing, so the three to four week window applies to them.

The exact length depends on how cold your refrigerator stays. Eggs keep best at 35°F to 40°F—the temperature range of a properly functioning fridge. If your refrigerator runs warmer than 40°F, eggs will spoil faster. Check your fridge temperature with an inexpensive thermometer if you are unsure.

Storage location matters too. Keep eggs in their original carton on a shelf rather than in the door. The door is warmer because it opens and closes constantly, and the carton protects eggs from absorbing odors and flavors from other foods.

Key Takeaways

• Unwashed eggs with their natural protective coating last three to five weeks in the refrigerator, while washed eggs last three to four weeks.
• Store eggs in their original carton on a shelf, not in the refrigerator door, because the door temperature fluctuates and is warmer than the main compartment.
• Your refrigerator must stay between 35°F and 40°F for eggs to reach their full shelf life; warmer temperatures shorten storage time.
• You can tell if an egg is still good by placing it in a bowl of water—a fresh egg sinks, while an old egg floats or stands upright.

Why the Protective Coating Makes a Difference

Eggshells are porous, which means air and bacteria can pass through them. The cuticle is a thin, waxy layer that covers the pores and acts as a barrier. It is invisible to the naked eye but essential to keeping an egg fresh. When you wash an egg with water, you strip away this coating, leaving the pores exposed.

Once the cuticle is gone, bacteria can enter more easily, and moisture can escape more quickly. This is why commercial eggs—which are washed and sanitized before sale—have a shorter shelf life than farm eggs that never touched water. If you buy unwashed eggs, resist the urge to rinse them before storage. Wash them only right before you cook.

In countries like the United Kingdom and much of Europe, eggs are not washed before sale, which is why they can be stored at room temperature for weeks. In the United States, the USDA requires commercial eggs to be washed, so American grocery store eggs must be refrigerated.

How to Store Eggs Properly

The carton is your best tool. It keeps eggs from rolling around and cracking, protects them from absorbing odors, and helps you track how old they are. Leave eggs in the carton they came in and place it on a middle or lower shelf where the temperature is most stable.

The refrigerator door is the warmest part of your fridge because it opens and closes many times a day. Eggs stored there will age faster than eggs stored deeper inside. If your fridge has a dedicated egg holder in the door, use it only if you plan to eat the eggs within two weeks.

Keep eggs away from strong-smelling foods like onions, garlic, or fish. Eggshells are porous enough to absorb odors, which can affect the taste. Store them separately or in a sealed container if your fridge is crowded.

Testing Whether an Egg Is Still Good

The most reliable test is the water float test. Fill a bowl with cold water and gently place the egg inside. A fresh egg sinks and lies flat on the bottom. An egg that is still good but older will stand upright on the bottom. An egg that floats to the surface has gone bad and should be thrown away.

This works because as an egg ages, the air cell inside grows larger. The larger the air pocket, the more buoyant the egg becomes. When the air cell is large enough, the egg floats. You can also crack the egg into a bowl and look at it—a fresh yolk will be firm and centered, while an old yolk will be flat and off-center.

Do not rely on smell alone. Some spoiled eggs do not smell noticeably bad until they are cracked open. If you are unsure, use the float test. It takes thirty seconds and removes all doubt.

Storing Different Types of Eggs

Chicken eggs are the standard, and the three to five week window applies to them. Duck and goose eggs have thicker shells and larger air cells, so they last slightly longer—up to six weeks if unwashed. Quail eggs are much smaller and have a shorter shelf life of about three weeks. If you buy specialty eggs, ask the seller how old they are at purchase, since that affects how long you have to use them.

Pasteurized eggs, which have been heat-treated to kill bacteria, last the same length of time as regular eggs. They are useful if you plan to eat raw or undercooked eggs in dishes like homemade mayonnaise or Caesar dressing, but they do not stay fresh any longer than standard eggs.

What Happens When Eggs Go Bad

A spoiled egg develops a sulfurous smell—the same rotten-egg odor you might notice near a swamp. This happens because bacteria inside the shell produce hydrogen sulfide gas. The smell is unmistakable once you crack the egg open, which is why you should never eat an egg that floats or smells off.

Eating a spoiled egg can cause food poisoning, though the risk is lower than with other spoiled foods because the shell provides a barrier. Still, there is no reason to take the chance. If an egg floats, throw it away. If it smells bad when you crack it, do not cook it.

Salmonella is a separate concern from spoilage. Salmonella can be present in a fresh-looking, fresh-smelling egg if the bacteria was inside the shell before you bought it. This is rare, but it is why the USDA recommends cooking eggs until both the white and yolk are firm, especially for young children, older adults, and people with weakened immune systems.

Organizing Your Fridge to Keep Eggs Fresh Longer

Place eggs on a shelf where the temperature is most consistent—usually the middle shelf or lower. Avoid the top shelf, which can be warmer, and always avoid the door. If your fridge has a dedicated egg compartment, use it only if it is on a shelf, not in the door.

Keep eggs away from raw meat and poultry to prevent cross-contamination. Store them in a separate area or on a higher shelf than raw proteins. This is a food safety practice that protects you even though eggs in their shells are already protected by the shell itself.

If you have a lot of eggs and are worried about them spoiling before you use them, write the purchase date on the carton with a marker. This makes it easy to use older eggs first and know at a glance which ones are approaching the end of their shelf life.

Frequently Asked Questions

Can I store eggs at room temperature if they are unwashed?

In the United States, no. Even unwashed eggs should be refrigerated because they may have been exposed to bacteria before you bought them. Room-temperature storage is safe only in countries where eggs are never washed and are sold immediately after collection, which is not the standard in the U.S.

Do I need to wash eggs before I cook them?

Washing is optional if the shell looks clean. If there is visible dirt or feces, rinse the egg under cool running water right before cooking. Do not wash eggs ahead of time and store them, because washing removes the protective cuticle and shortens shelf life.

What if I crack an egg and it looks watery or the yolk is runny?

A runny yolk is normal in a fresh egg—that is not a sign of spoilage. A watery white (where the white is thin and spreads easily) suggests the egg is older but still safe to eat. Use the float test or smell test if you are unsure whether it is safe.

Can I freeze eggs to make them last longer?

Yes. Crack eggs into an ice cube tray, freeze them, then transfer the cubes to a freezer bag. Frozen eggs last three to four months. Thaw them in the refrigerator before cooking. Do not freeze eggs in their shells—the contents expand and crack the shell.

Why do some eggs have brown shells and others white?

Shell color depends on the breed of chicken and has no effect on freshness, nutrition, or shelf life. Brown and white eggs last the same length of time in the refrigerator. The color is purely cosmetic.