There are numerous reasons why you might want to know where the center of a room is. For example, you might want to install a ceiling fan. The most logical place for a fan is in the center of the ceiling. You might also want to install laminate flooring. In many cases, you begin the installation of laminate flooring directly in the center of the floor. Regardless of why you need to know, the process of locating the center of the room is relatively easy.
Measure the distance between the wall to your left and the wall to your right when you walk through the door of the room. Use a standard tape measure for measuring. For example, say the measurement is 20 feet.
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Divide the distance between the left and right wall by two. Using the example of 20 feet, this tells you that the distance from one wall to the center of the room is 10 feet.
Measure the distance between the wall with the door in it and the back wall of the room. For example, say the measurement is 15 feet.
Divide the distance between the front wall and back wall by two. Using the example of 15 feet, this tells you that the distance from one wall to the center of the room is 7 ½ feet.
Locate the place where the two measurements intersect to obtain the middle of the room. Stretch a string from the left wall to the right wall that runs parallel with the front wall. Place the string 7 ½ feet away from the front wall. Run a second string from the front wall to the back wall that runs parallel to the left wall. Place the string 10 feet away from the left wall. The center of the room is where the lines intersect.