How Long to Boil Eggs (Soft, Medium and Hard)

Boil large eggs for 4–5 minutes for soft, 6–7 minutes for medium and 9–12 minutes for hard. Start timing once the water returns to a rolling boil if you began with boiling water; otherwise start from cold and count about 1 minute longer.

Times shift with egg size, fridge temperature, altitude and whether the lid is on. A gentle simmer gives more control than a fierce boil, and an ice bath stops cooking exactly where you want it.

For food safety, cook until both white and yolk are firm. The USDA does not give a single internal temperature for boiled eggs, so use doneness rather than a thermometer reading as your guide.

Timing

The table assumes large eggs straight from the fridge placed into already-boiling water, then simmered gently at a steady bubble. Times start when the water returns to a boil after adding the eggs; adjust by about 30 seconds up or down for extra-large or small eggs, or if starting with room‑temperature eggs. Immediately transfer cooked eggs to ice-cold water for at least one minute to stop cooking.

What changes the time

Size or thickness

Larger eggs need more time for heat to reach the centre. A medium egg might be soft-boiled in about 5 minutes, while a jumbo can take closer to 7 at the same simmer. Very fresh whites also set a little slower around the yolk. Keep your target doneness constant and adjust by roughly 30–60 seconds per size step up or down; then test one egg before draining the batch.

Starting temperature — chilled, room-temperature or frozen

Cold eggs from the fridge add significant lag because they start well below boiling. Add roughly 45–60 seconds compared with eggs rested 15–20 minutes at room temperature. Cooking from frozen is not recommended; thaw first in the refrigerator. If you must use very cold eggs straight away, begin timing only once the water returns to a steady gentle boil after addition.

Equipment or altitude

Altitude lowers the boiling point of water, so cooking takes longer even if bubbles look vigorous. Above about 1,500 metres, plan on adding roughly 15–30% more time and keep the pot partially covered to hold heat. Wide pans lose energy faster than taller, narrower pots; an electric kettle-and-bowl method cools quickly, so expect another 30–60 seconds versus a lidded saucepan held at a gentle boil.

How to tell it is done

Without a timer, judge doneness by texture and appearance. For soft eggs, the white should be just set while the yolk remains fluid; for medium, the yolk thickens but stays jammy in the centre; hard-boiled whites are fully firm and yolks crumbly throughout. Lift an egg from the water and spin it on a flat surface: a wobble suggests a loose interior, whereas a steady spin indicates firmer contents. You can also tap gently—soft centres feel springy, harder ones sound duller. If using a thermometer, note that USDA guidance does not give a single internal temperature for boiled eggs; cook until both white and yolk are firm.

Common mistakes

• Starting with cold water then timing inconsistently leads to unpredictable results. Bring water to a boil first, lower eggs gently, start timing immediately, and use similar-sized eggs so heat penetrates evenly each time you cook them.
• Overcrowding the pan prevents even circulation, causing some eggs underdone and others overcooked. Use a roomy saucepan with a single layer, cover by at least 3–4 cm of rapidly boiling water before lowering carefully.
• Skipping the immediate chill leaves residual heat cooking interiors past your target. Transfer straight into ice-cold water or very cold running water for several minutes until completely cool to stop carryover instantly.
• Boiling fiercely cracks shells and toughens proteins. Maintain a gentle simmer rather than a rolling boil once eggs are added, adjusting heat to small bubbles without violent agitation inside.
• Using very fresh eggs makes peeling difficult because low pH adheres membrane to albumen. Choose slightly older eggs for easier shells, or add a splash of vinegar to help loosen skins.