The cooking time for boiled eggs depends on how you like them. For a soft-boiled egg with a runny yolk, cook it for 4-6 minutes. For a medium-well boiled egg with a slightly runny yolk, cook for 7-8 minutes. For a hard-boiled egg with a firm yolk, cook it for 9–12 minutes. Keep in mind that the cooking time may vary slightly based on the size of the egg and the altitude of your location.