Eggs Stay Fresh Longer Than You Think. Here’s How to Tell if They’re Still Good

How Long Do Eggs Really Last? The Truth Behind Expiration Dates

If you’ve been tossing eggs based solely on the date printed on the carton, you might be wasting perfectly good food. That “best by” date isn’t a safety deadline—it’s actually about quality. We spoke with food safety experts to uncover the real shelf life of eggs and how to tell if they’re still good to eat.

The Real Shelf Life of Refrigerated Eggs

According to the USDA, eggs typically remain good for three to five weeks in the refrigerator. However, food safety expert Zachary Cartwright, a member of the Institute of Food Technologists, says eggs “often remain safe to eat for a week or two beyond that date, as long as they’ve been kept refrigerated.”

To maximize freshness, Cartwright recommends storing eggs in their original carton with the pointed end down. “This helps maintain their freshness by keeping the air cell at the top, which slows moisture loss and keeps the yolk centered.” He also advises keeping eggs in the coldest part of your fridge—not the door—where temperatures fluctuate.

Why America Refrigerates Eggs

The US requires egg refrigeration due to our washing process, which removes the natural protective coating on the shell. “In some other countries, eggs are not refrigerated because they retain their protective coating,” Cartwright explains. “However, once eggs are refrigerated, they should remain so to prevent condensation, which can promote bacterial growth.”

The USDA washing process prevents salmonella spread, which is why eggs should be refrigerated as soon as possible after gathering.

Freezing Eggs: Yes, You Can!

Eggs can be frozen but never in their shells. You can crack and beat them together before freezing, or separate yolks and whites. The whites freeze better since their texture remains unchanged. For yolks, add salt and corn syrup or sugar to maintain consistency. Frozen eggs can last up to one year, while cooked scrambled eggs or egg bites stay good in the freezer for two to three months.

The Simple Egg Freshness Test

Want to check if your eggs are still good before cracking them? Try the float test: Fill a glass with cold water and gently drop the egg in. If it sinks and lies on its side, it’s perfectly fresh. If it sinks but stands upright, it’s older but still safe to eat soon. If it floats to the top, it’s gone bad and should be discarded.

“This test works because air builds up inside the egg as it ages, making it more buoyant,” Cartwright explains. However, test each egg individually—passing the float test doesn’t guarantee all eggs in the carton are good.

Signs of Spoiled Eggs

Beyond the float test, check for these warning signs: a strong sulfur-like odor when cracked open, or unusual coloring in the white or yolk (pink, green, or iridescent hues can indicate bacterial contamination).

What About That “Best By” Date?

Cartwright clarifies that the “best by” date is “a guideline, not a strict rule.” Eggs are often good for one to two weeks after the printed date, provided they’ve been refrigerated. As eggs age, their quality diminishes—they may lose firmness and the whites might become thinner—but they can still be safe to eat.

Is Eating Expired Eggs Dangerous?

Eating eggs past their “best by” date isn’t necessarily bad—as long as you’ve verified they’re not spoiled. Use the float test, check for odd colors, and smell for sulfur odors. If any egg fails these tests, discard it. When in doubt, throw it out.

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