Boiled egg time by size and doneness calculator

Choose small, medium, large, or extra large, then select soft, jammy, or hard. The result comes from a fixed table, so the same inputs always produce the same answer. It is intended for eggs lowered into already boiling water and reports both minutes and seconds for easy use with a kitchen timer.

Choose the egg size printed on the carton

Start with the size grade on the carton rather than estimating the shell by sight. This calculator accepts small, medium, large, and extra large because those categories give a practical, repeatable way to account for the amount of egg that heat must travel through. A larger egg receives more time at every doneness level, while the selected doneness controls the other part of the lookup. If eggs were moved into a different carton or came directly from a farm, compare them with a known graded egg or use the closest reasonable category. Do not enter descriptive terms such as jumbo, tiny, or average: the calculator deliberately rejects values outside its published table instead of silently guessing. That strict behavior makes automated results predictable and helps reveal mismatched data early. The estimate assumes a single refrigerated egg placed carefully into water that is already boiling. For a batch, keep the chosen size consistent and avoid crowding the pan so water can circulate around every shell.

Match doneness to the yolk texture you want

Select soft for a set white with a flowing yolk, jammy for a thick and spreadable yolk, or hard for a fully set center. These labels describe the intended texture, not a food-safety certification or a measurement of the egg's internal temperature. The fixed table assigns each valid size and doneness pair a whole number of minutes. For example, moving from soft to jammy adds time without changing the selected egg size, and moving to a larger size adds time without changing the target texture. Begin timing when the egg enters already boiling water and the water returns to a steady boil. Keep the boil controlled rather than violent, since hard movement can crack shells while an unusually weak simmer can transfer heat more slowly. When the timer ends, remove the egg promptly. Leaving it in hot water continues cooking the yolk and can erase the texture difference that the selected time was meant to create. Use the returned seconds when a device or workflow expects seconds rather than minutes.

Treat the result as a consistent kitchen baseline

Boiling an egg is affected by more than size and doneness. Starting temperature, altitude, pan material, water volume, burner strength, and even the exact grading tolerance of the egg can shift the final texture. This calculator intentionally does not pretend to measure those variables. Its value is a stable baseline: each accepted pair always returns the same time, which makes the answer easy to repeat, compare, and automate. On the first use in a particular kitchen, cook one egg at the suggested time, cool it immediately in cold or ice water, and inspect the yolk. If local conditions consistently produce a result that is slightly too loose or too firm, note a small personal adjustment for that kitchen while keeping the table result as the reference. Cooling matters because residual heat continues moving inward after the egg leaves the pan. The API costs $0.002 per request and uses the identical deterministic lookup, making it suitable for recipe tools, meal-planning interfaces, voice assistants, or other systems that need an explainable answer rather than a random estimate.