Egg Boiling Calculator
Get the perfect boiled egg every time. Soft, medium, or hard — adjusted for egg size and altitude.
How this calculator works
Runny, jammy, or hard? Getting the perfect boiled egg is weirdly stressful. This calculator takes the guesswork out — tell us how you like it, how big the egg is, and whether it's coming straight from the fridge. We'll give you the exact time. No more grey yolks. No more soupy whites. Just eggs, done right.
Our pick
Amazon Basics Digital Kitchen Scale
Precision makes the difference between a good recipe and a great one.
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Frequently Asked Questions
Why does altitude affect boiling time?
Water boils at a lower temperature at higher altitudes (about 1°C less per 300m). This means eggs cook slower because the water is cooler, so you need to add extra time.
Should I start with cold or boiling water?
This calculator assumes you are lowering eggs into already-boiling water, which gives the most consistent results. If you start in cold water and bring to a boil, timing is less predictable.
How do I get the perfect soft-boiled egg?
Use a medium egg from the fridge, lower gently into rapidly boiling water, and cook for exactly 6 minutes 30 seconds. Transfer immediately to an ice bath to stop the cooking.
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