How big is 15m2? Grade school mathematics can help. The area of a surface is defined as the amount of material needed to "cover" it completely. A square meter is the basic unit of area of the metric system.

The formula for calculating the area of a rectangle is: A = l x w, where "A" is the area, "l" is the length and "w" is the width. If you assume that the area of a rectangle is 15 square meters, you can estimate the values for the length and width, which yields 15 square meters. Choosing a value of 5 meters for the length and 3 meters for the width, produces 15 square meters, the size of a medium-sized room.

Calculating 15m squared, or any size, can be hard. Instead of wondering, "how big is 15 square meters" or any other size, a laser tape measure might help you with the measurements and that math.