Because of the variety of steak cuts and thicknesses, it's hard to dictate exactly how long it will take you to cook your steak. Don't be afraid to use a meat thermometer to get an accurate temperature reading on your steak. Otherwise, keep in mind that the more give the steak has when you poke it with your finger, the less cooked it is. For a steak that is about 1 1/2 inches, you'll need about 12 minutes' cooking time--6 minutes for each side--to achieve medium-rare.