The time it takes to hard-boil an egg depends on the size of the egg. Give the egg time to reach room temperature, usually about 12 to 15 minutes. Place the egg(s) in a pan of water and wait for it to boil (about eight to 10 minutes; less time if you cover the pan with a lid).
https://www.leaf.tv/articles/how-long-does-it-take-to-boil-eggs/
Step 1: Place eggs and water in a saucepan. 1  Arrange the eggs in a single layer in a large saucepan so they cook evenly. Do not stack them. 2  Add enough cold water to cover the eggs by 1 inch.
http://www.bhg.com/recipes/how-to/cooking-basics/how-to-boil-an-egg/
Step 1: Place eggs and water in a saucepan. 1  Arrange the eggs in a single layer in a large saucepan so they cook evenly. 2  Add enough cold water to cover the eggs by 1 inch.
http://www.bhg.com/recipes/how-to/cooking-basics/how-to-boil-an-egg/
Once the water has begun to boil, reduce the heat down to simmer and remove the lid. This is where the size of the egg becomes important. For hard-boiled eggs, medium eggs should be left in the simmering water for 11 minutes, 12 minutes for large eggs, and 13 minutes for jumbo eggs.
https://www.leaf.tv/articles/how-long-does-it-take-to-boil-eggs/
If you need easy-to-peel eggs and you have fresh eggs, you might want to try steaming the eggs for 15 minutes. Pour an inch of water into a pot and insert a steamer basket.Bring to a boil. Place the eggs in the steamer basket, cover and steam for 15 minutes (more or less, check!).
http://www.simplyrecipes.com/recipes/how_to_make_perfect_hard_boiled_eggs/
Add cold water until the eggs are submerged under about one inch of water. STEP 2: Bring to a full boil, uncovered. STEP 3: Immediately turn off heat, remove from the burner and cover. STEP 4: Set timer for…. 3 minutes for very runny soft-boiled eggs with just-set whites. 4 minutes for runny soft-boiled eggs. 6 minutes for creamy, custard-y “medium”-boiled eggs.
https://www.pillsbury.com/everyday-eats/breakfast-brunch/how-to-boil-eggs?int=td&rc=
For medium boiled eggs, large eggs should simmer for seven minutes, medium eggs for six minutes, and jumbo eggs for eight minutes. When the time’s up, remove the eggs from the pan and place them in cold water for 10 to 15 minutes.
https://www.leaf.tv/articles/how-long-does-it-take-to-boil-eggs/
Step 1: The Boiling Stage. Put up a pot of water to boil — you'll need one big enough for water to flow freely around the number of eggs you'll be cooking. Once the water's boiling, use a large spoon to gently lower the eggs into the water. Lower the heat to maintain a simmer and set a timer for 12 minutes. Now, don't stress...if you let the water boil a little too much or drop below a simmer or fish out your eggs 14 minutes later, it's okay. More From How to Cook.
http://www.goodhousekeeping.com/food-recipes/cooking/tips/a19189/cooking-perfect-hard-boiled-eggs/
If you have the type of stove burner that doesn't retain any heat when turned off, you might want to lower the temp to low, simmer for a minute, and then turn it off. Depending on how cooked you like your hard boiled eggs, the eggs should be done perfectly in 10-12 minutes. That said, depending on your altitude, the shape of the pan, the size of the eggs, the ratio of water to eggs, it can take a few minutes more.
http://www.simplyrecipes.com/recipes/how_to_make_perfect_hard_boiled_eggs/
How to Hard-Cook Eggs. Step 1: Place eggs and water in a saucepan. Arrange the eggs in a single layer in a large saucepan so they cook evenly. Do not stack them. Add enough cold water to cover the eggs by 1 inch.
http://www.bhg.com/recipes/how-to/cooking-basics/how-to-boil-an-egg/
how long to boil large hard boil eggs.
It takes 12 to 15 minutes to boil large and hard eggs.