How Long to Boil an Egg — A Minute-by-Minute Guide
A boiled egg is the easiest thing in the kitchen to get wrong, because the window between what you wanted and what you got is about ninety seconds wide. Here are the times that work, and the three variables that quietly shift them.
The times
All of these assume a large egg, taken straight from the fridge, lowered into water that is already at a rolling boil.
| Time | Result | Best for |
|---|---|---|
| 3 minutes | White just set, yolk fully liquid | Dipping soldiers |
| 4 minutes | White firm, yolk runny and warm | Ramen, on toast |
| 6 minutes | Soft-boiled: yolk molten at the centre | The classic |
| 7 minutes | Jammy: yolk thick, still bright orange | Salads, grain bowls |
| 8 minutes | Yolk mostly set with a soft middle | Halving without mess |
| 10 minutes | Hard-boiled, yolk tender and yellow | Egg salad, snacking |
| 12 minutes | Fully hard, dry yolk | Deviled eggs, packed lunches |
Past twelve minutes you gain nothing and start losing something: the grey-green ring around the yolk is iron and sulphur reacting, and it is the visible signature of an overcooked egg.
Start the timer at the right moment
This is where most recipes are vague and most eggs go wrong. The clock starts when the egg enters water that is already boiling — not when you put the pan on, and not when you see the first bubbles.
The alternative method, starting eggs in cold water and bringing everything to the boil together, is more forgiving of cracking but almost impossible to time consistently, because how long your water takes to boil depends on your pan, your hob and how much water you used. If you want repeatable eggs, use boiling water and a timer.
Lower the eggs in with a spoon rather than dropping them. A cracked shell in the first five seconds ruins an otherwise perfect egg.
Three things that shift the times
Egg size
The table above is for large eggs, roughly 57 g. Medium eggs need about 30 seconds less, extra-large about 30 seconds more. It sounds trivial until you realise that thirty seconds is a third of the gap between soft-boiled and jammy.
Starting temperature
Eggs at room temperature cook roughly a minute faster than eggs from the fridge, and they are less likely to crack. If you plan ahead, take them out twenty minutes before. If you do not, subtract nothing and use the times above — they assume cold eggs, because that is what most people actually have.
Altitude
Water boils at a lower temperature as you climb, so eggs cook more slowly. Above roughly 3,000 feet, add about a minute for every 1,000 feet of elevation. At 6,500 feet a hard-boiled egg wants closer to 13 minutes than 10.
The ice bath is not optional
The moment the timer sounds, move the eggs into cold water. Two things happen. First, cooking stops — an egg left in its own residual heat keeps going for another minute or more, which is exactly enough to turn jammy into hard. Second, the rapid cooling contracts the egg slightly away from the membrane, which is what makes peeling possible rather than a war of attrition.
Sixty seconds in cold water is enough to halt cooking. Three minutes makes them properly cold for peeling.
Why some eggs refuse to peel
It is not the ice bath, the vinegar, the salt or the spoon technique. It is freshness. In a very fresh egg, the white is more acidic and clings hard to the inner membrane. As an egg ages, its pH rises and the bond weakens.
The practical consequence is counterintuitive: eggs that are a week or two old peel far more easily than eggs laid yesterday. If you buy farm-fresh eggs and plan to boil them, leave them in the fridge for a few days first. Steaming instead of boiling also helps, because steam penetrates the shell more gently.
Poached, fried, and the other clocks
While you have a timer open: a poached egg wants 3 to 4 minutes in barely-simmering water with a splash of vinegar. A fried egg, sunny side up, takes about 3 minutes over medium heat. Scrambled eggs, done slowly and properly, take 4 to 5 minutes of near-constant stirring off and on the heat.
Every one of those is on the timer's preset list alongside the boiled times, so you can set them with one tap instead of doing arithmetic while holding a pan.
The short version
Boiling water, cold large egg, timer started the moment it goes in. Six minutes for soft, seven for jammy, ten for hard. Straight into cold water when it rings. Use eggs that are a few days old if you intend to peel them.