When Does An Egg Expire? Timeline Guide

Eggs don’t always expire on the date printed on the carton. Most eggs are safe to eat for 3 to 5 weeks after you buy them, as long as they have been refrigerated the whole time. This guide explains how to read egg carton dates, how to test freshness at home, and when to throw an egg out for safety.

How Are Egg Dates Labeled?

Egg cartons in the United States typically carry one of two dates: a sell‑by date or a use‑by date. Sell‑by dates tell the store how long to keep eggs on the shelf. The USDA says eggs are still safe to eat for 3 to 5 weeks after that date if they have been kept refrigerated.

Use‑by dates are a manufacturer’s estimate of peak quality, not a safety deadline. Neither date is a federal requirement for eggs sold in cartons, though many producers include one voluntarily. The only mandatory mark is the pack date, a three‑digit number (001 to 365) that shows the day the eggs were washed, graded, and packed. That number tells you the true age of the eggs.

How Long Do Eggs Actually Last?

Fresh, raw eggs in the shell can be refrigerated for 4 to 5 weeks after the pack date, according to the USDA. That means if the pack date is January 1 (day 001), the eggs are good until roughly late January or early February. If you buy eggs close to their sell‑by date, you still have several weeks of safe use ahead of you.

After that window, the quality declines. The white becomes thinner, the yolk flattens, and the air cell inside grows larger. But the eggs are not necessarily spoiled. Many people safely eat eggs that are 6 or 7 weeks old if they have been continuously refrigerated and show no signs of spoilage. The risk is low, but flavor and texture suffer.

When Does An Egg Expire? Timeline Guide

The short answer is that a properly refrigerated egg can be used for about 5 weeks from the pack date. After that, the egg is past its prime but may still be safe if it passes a sniff test and looks normal when cracked. However, the USDA recommends discarding eggs after 5 weeks of refrigeration to be safe.

Once an egg is cooked, the timeline shrinks. Hard‑boiled eggs in the shell last about 1 week in the fridge. Peeled hard‑boiled eggs should be eaten within a few days. Raw eggs that have been removed from the shell and stored in a sealed container last 2 to 4 days. Frozen raw eggs (whites and yolks separated or mixed) can last up to a year, though quality declines after 6 months.

Does The Float Test Work? (And Is It Reliable?)

The float test is a common kitchen method for checking egg freshness. You place an egg in a bowl of cold water. If it sinks and lies flat on its side, it is very fresh. If it stands upright on the bottom, it is older but still safe to eat. If it floats, the air cell inside has grown large enough to lift the egg, and the egg is likely past its prime.

The float test tells you the age of the egg, not whether it is safe to eat. An egg that floats may still be edible if it smells fine when cracked. Conversely, a fresh‑looking egg that sinks could be contaminated with bacteria like Salmonella. The float test is a helpful guide for quality, but it is not a substitute for a sniff test or proper refrigeration.

How To Store Eggs For Maximum Freshness

Keep eggs in the main body of the refrigerator, not in the door. The door experiences temperature swings every time you open it, which speeds up spoilage. Store eggs in their original carton. The carton protects the shells from absorbing strong odors and prevents moisture loss.

Do not wash eggs before storing. Factory‑washed eggs have a thin protective coating that is already removed, but washing them again can damage the shell and allow bacteria to enter. Keep eggs at a consistent temperature below 40°F (4°C). If an egg has been left at room temperature for more than 2 hours, discard it. Bacteria can multiply rapidly at room temperature even if the egg looks fine.

When Should You Throw An Egg Away? (Safety Signs)

Trust your nose. A bad egg has a distinct sulfur or rotten smell that is obvious when you crack it open. If it smells off, throw it away. Also discard eggs with cracked or leaking shells. Cracks let bacteria in, and the egg is no longer safe even if it has been refrigerated.

If you crack an egg and see a pink, green, or iridescent white, that signals bacterial growth. Dispose of it immediately. A cloudy white is normal in very fresh eggs and does not indicate spoilage. When in doubt, remember the USDA rule: five weeks in the fridge is the maximum recommended time for shell eggs. After that, even if it looks fine, the risk increases.

What About Hard‑Boiled Eggs? Expiration Timeline

Hard‑boiled eggs spoil faster than raw eggs because cooking removes the protective bloom on the shell. Refrigerate hard‑boiled eggs within 2 hours of cooking. Keep them in the shell for best quality. They will stay safe for about 1 week in the fridge. Once peeled, eat them within a few days.

Do not leave hard‑boiled eggs at room temperature for more than 2 hours. If you are taking them on a picnic or to work, pack them in a cooler with ice packs. Hard‑boiled eggs that have been out of the fridge for longer than 2 hours should be thrown away. The same rule applies to deviled eggs or egg salad.

Can You Freeze Eggs To Make Them Last Longer?

Yes, but not in the shell. Whole eggs expand when frozen and the shell will crack. Instead, crack the eggs into a bowl, beat them until the yolk and white are combined, then pour into a freezer‑safe container. You can also freeze egg whites and yolks separately. Add a pinch of salt or sugar to yolks before freezing to prevent them from turning gummy.

Frozen eggs can be used for up to one year, but quality is best within 6 months. Thaw them in the refrigerator overnight, and use them only in cooked dishes like scrambled eggs, omelets, or baking. Do not use thawed eggs in recipes that call for raw or lightly cooked eggs.