Boiled eggs are one of the simplest foods to cook, but the timing is easy to get wrong. A perfectly boiled egg comes down to minutes, sometimes seconds. For a large egg straight from the refrigerator, a soft-boiled egg with a runny yolk takes about 6 minutes. A medium-boiled egg with a jammy, slightly soft center takes about 8 minutes. A fully hard-boiled egg with a firm yolk takes about 10 to 12 minutes. These times assume you are lowering the eggs into already boiling water and then reducing the heat to a gentle simmer.
How Long Do Boiled Eggs Take To Cook?
The exact time depends on the method you use and the size of the egg. The times below are for large eggs (about 50 to 55 grams each) that are cold from the fridge. If your eggs are at room temperature, subtract about 30 seconds to 1 minute from the cooking time.
- 6 minutes: Soft-boiled. The white is fully set, but the yolk is warm and runny.
- 8 minutes: Medium-boiled. The white is firm and the yolk is soft, jammy, and slightly translucent in the center.
- 10 minutes: Hard-boiled. The yolk is mostly firm but still has a tiny bit of moisture and a bright yellow color.
- 12 minutes: Fully hard-boiled. The yolk is completely firm, pale yellow, and dry. This is the safest choice for egg salad or slicing.
If you prefer a firmer yolk than 6 minutes but a softer yolk than 10, try 7 minutes. Many people find that 7 minutes gives a yolk that is soft but not liquid, which works well for ramen or toast.
What Is the Best Way to Boil Eggs?
The most reliable method is to place the eggs in a single layer in a saucepan. Cover them with cold water by about 2.5 centimeters (1 inch). Bring the water to a full rolling boil over high heat. As soon as the water reaches a boil, turn off the heat or reduce it to a gentle simmer, depending on the texture you want.
For soft and medium-boiled eggs, lower the heat to a gentle simmer and start your timer immediately. For hard-boiled eggs, you can turn off the heat entirely, cover the pan, and let the eggs sit in the hot water. This method is called off-heat cooking. It is gentler and less likely to cause the whites to become rubbery.
Some cooks prefer to lower eggs into already boiling water with a slotted spoon. This gives you more precise timing because the water is already at temperature. The risk is that the eggs may crack when they hit the bottom of the pan. Lowering them gently on a spoon reduces that risk.
Why Do Eggs Crack While Boiling?
Eggs crack for two main reasons: rapid temperature change and overcrowding. If you drop a cold egg into violently boiling water, the shell expands faster than the egg inside, and the shell cracks. The same thing happens if the eggs are bouncing against each other in a pan that is too small.
To reduce cracking, let the eggs sit at room temperature for 10 to 15 minutes before cooking. Add a pinch of salt to the water. Salt does not prevent cracking, but it helps the egg white set quickly if a crack does occur, so less white leaks out. Keeping the water at a gentle simmer rather than a rolling boil also prevents the eggs from knocking into each other.
A cracked egg is still safe to eat as long as it is cooked thoroughly. The white may look uneven, but the egg will taste the same.
How Do You Peel Boiled Eggs Easily?
Fresh eggs are harder to peel than older eggs. As an egg ages, it loses carbon dioxide through the shell, which makes the inner membrane less sticky. If you are boiling eggs specifically for easy peeling, eggs that are 7 to 10 days old are ideal.
After cooking, immediately transfer the eggs to a bowl of ice water. Let them sit for at least 5 minutes. The cold water shocks the egg and causes the shell to contract slightly, separating it from the white. Tap the egg gently on a hard surface, roll it under your palm to crack the shell all over, and peel starting from the wider end, where the air pocket is.
Peeling under running water also helps. The water washes away shell fragments and lubricates the membrane.
Is It Safe to Eat Soft-Boiled Eggs?
Soft-boiled eggs have a runny yolk, and the yolk may not reach a high enough temperature to kill bacteria. The concern is Salmonella, which can be present on the outside of the shell or, in rare cases, inside the egg. The white of a soft-boiled egg is fully cooked, but the yolk remains liquid.
The Centers for Disease Control and Prevention recommend cooking eggs until both the white and the yolk are firm to reduce the risk of foodborne illness. This means that soft-boiled eggs carry a small but real risk, especially for pregnant women, young children, older adults, and people with weakened immune systems.
If you are in one of these groups, choose hard-boiled eggs cooked for at least 10 minutes. If you are otherwise healthy, soft-boiled eggs are generally considered acceptable, but the risk is not zero. Pasteurized eggs, if you can find them, eliminate the risk because they are heated in the shell to kill bacteria without cooking the egg.
Do Boiling Times Change at High Altitude?
Yes. Water boils at a lower temperature at higher altitudes because atmospheric pressure is lower. At sea level, water boils at 100°C (212°F). At 1,500 meters (about 5,000 feet), water boils at roughly 95°C (203°F). Because the water is cooler, eggs take longer to cook.
At altitudes above 1,000 meters (about 3,300 feet), add 1 to 2 minutes to your boiling time. At very high altitudes, such as mountain towns above 2,400 meters (8,000 feet), you may need to add 3 minutes or more. The off-heat method becomes less reliable at altitude because the water cools faster, so stick to simmering the eggs directly.
How Can You Tell If an Egg Is Done Without Cutting It?
You cannot reliably tell by looking at the shell. The most accurate way is to use a timer and trust the clock. Some people spin the egg on a flat surface. A hard-boiled egg spins quickly and evenly because the contents are solid. A soft-boiled egg wobbles because the liquid yolk shifts inside. This trick works, but it takes practice to read the difference.
Another clue is the temperature of the shell. A fully cooked egg feels hot all the way through when touched after removing it from the water. A soft-boiled egg may feel slightly cooler at the center because the yolk is still liquid. This is not a precise test, and it is easy to misjudge. The timer is your most reliable tool.
Frequently Asked Questions
How long do boiled eggs take to cook for a runny yolk?
A runny yolk takes about 6 minutes for a large egg lowered into simmering water. At room temperature, reduce the time to about 5 minutes.
How long do boiled eggs take to cook for a firm yolk?
A fully firm yolk takes about 10 to 12 minutes for a large egg. At 10 minutes the yolk is mostly firm with slight moisture, and at 12 minutes it is completely dry and firm.
Should I start eggs in cold water or boiling water?
Starting in cold water is easier and less likely to crack the shells, but timing is less precise. Lowering eggs into boiling water gives more exact control over the cooking time.
How long can boiled eggs sit out after cooking?
Cooked eggs should not sit at room temperature for more than 2 hours. Refrigerate them within that window, and they will keep for up to 1 week in the shell.
