Do boiled eggs float

In this brief guide, we will address the query, “do boiled eggs float?” We will also discuss what is the composition of boiled eggs, which other methods can be used to cook eggs, and their nutritional facts.

Do boiled eggs float?

No, boiled eggs do not float. Floating eggs might be an indicator that something is off with your eggs. 

It is said that only old eggs float, and that is supported because when the egg ages, the pocket inside the eggs grow larger as water is released and substituted by air.

Actually to determine whether an egg is still fresh, all you need to do is to place it inside a bowl of water, the floating eggs might be discarded, you can complement this test with a smell test, to fully assure the egg is rotten.

Why do eggs float?

Whenever you are looking to find ways to determine if your eggs are still fresh, you might have read about the boiling method. This method is based on the fact  that when eggs age, their inside pocket increases its size as fluid evaporates through the shell.

Spotting eggs floating means that they could be bad, fresh eggs tend to sink in water. If you want to test this hack, you need to carefully lower your eggs into cold water with the help of a spoon, the results will tell you

  • If the egg sinks, you have a fresh egg.
  • If the egg is at an angle on the bottom, it is still fresh and appropriate for consumption.
  • If the egg stands on its pointed end at the bottom, it might be better to use that egg in baked dishes, or hard-boiled it.
  • If the egg floats, they are old and it is better to discard it.

It is recommended to pair this method with a smell test, so, you need to crack open the egg and check its smell, you will know immediately if something is off!

Which other methods can help you determine if an egg is old?

Floating is an easy method to determine if your eggs are still in their best point for human consumption, but this is not the only method that can be used to do so. Some other methods could be

  • Spinning the egg. As the title indicates, you need to spin your egg on a flat surface, then stop its rotation quickly with the help of your finger.. If the egg remains still, it is a hard-boiled egg, but if the egg continues rotating, it means it is still uncooked.
  • Shake the egg. Yes, you only need to shake the egg and be conscious about what you feel. When hard-boiled, you will sense a solid texture. When liquid, you can easily tell the egg inside is moving.
  • Air bubbles. To test this, you need to prepare a bowl with boiling water and include the eggs inside of it. When the egg is uncooked, you will see bubbles, because of the gas expansion. When boiled, no bubbles will show up.
  • Flashlight test. With the help of a flashlight you can easily spot raw eggs. When the egg lights up with the lantern, it means the inside is liquid. When you obtain an opaque result, it is hard-boiled.

If you want further guidance on this subject, please click here.

Can boiled eggs be left out?

No, hard-boiled eggs cannot be left out. Room temperature is not the best when you want to preserve any cooked foods, like hard-boiled eggs, it has been reported that it takes only 2 hours to no longer be safe to eat.

So, if you have just prepared hard-boiled eggs to avoid letting them out at room temperature, put them in a bowl with ice water, and place them in the fridge instead, this will enlarge the shelf-life of your hard-boiled eggs.

What is the best way to store boiled eggs?

There are two options when it comes to storing hard-boiled eggs: the fridge or the freezer. Avoid at all costs leaving your hard-boiled eggs at room temperature for a long time, within a few hours they can easily spoil.

You can store your hard-boiled eggs whether peeled or unpeeled, they will last for up to a week, it does not matter if they are kept in the fridge or the freezer. Try to use a covered container, which will help you keep them fresh and moist.

Freezing hard-boiled eggs may not be the best choice, because you will end up with tough and inedible goods. However, you can separate the whites from the yolks, as the white part of the egg is the most affected by the freezing process.


In this brief guide, we have addressed the query, “do boiled eggs float?” We have also discussed other queries related to the subject at hand. 

Hope you found this blog useful. If you have any questions, please let us know.


Hi, I am Charlotte, I love cooking and in my previous life, I was a chef. I bring some of my experience to the recipes on this hub and answer your food questions.