Square units are a way to measure area, which is the amount of space inside a shape. They are calculated by multiplying the length and width of a shape. For example, if a rectangle is 4 units long and 3 units wide, its area is 12 square units. The unit of measurement can vary, such as square meters, square feet, or square inches, depending on the context. When using square units, it’s important to remember that they represent two-dimensional space. This means that square units are not used for measuring volume, which requires cubic units. Understanding square units helps in various fields, including architecture, landscaping, and engineering.