The formula for square footage area used will be in accordance with the shape. Include the price per sq ft to estimate the total cost. Calculator Use Use this calculator to find the square footage, square yardage, square meters or acres for a building, home, garden or construction project. *Square Footage is also known as (a.k.a) square feet, square ft, … In this article, we are going to explain how to calculate square footage and understand the square footage formula.. Square Footage Calculator Use this square footage calculator to easily calculate the area of a rectangular room or a room with a more complex shape. Square footage is calculated by multiplying width by length or width by height. For example, to calculate square footage of a room in square (2) or rectangle shape. Square footage calculator is an easy tool that enables you to calculate an area in square feet as well as perform conversions, such as finding out how many square feet are in an acre. Formulas and explanation below. Simply multiply the length and width of the area. To calculate square footage of an oddly shaped area, for example an L shaped area. Square Footage Calculator Find the square footage of an area by select its shape and entering the dimensions. To The next step in how to calculate square footage is to plug your measurements into the square footage formula: L x W = A (in square feet) To find square feet, multiply the length measurement in feet by the width measurement in feet. You can enter feet only, inches only or any combination of the two. Calculate square footage, yardage, meters and acres for landscape, flooring, carpet, or tiling projects to estimate area and the amount of material you will need. Use the calculator above to calculate your square footage. Definition of a square calculator A square footage calculator is an automated program used to calculate the number of square feet of a given area. Typically in the US, feet, and inches are used for measuring. Optional price field for calculating dollar costs. The Square Footage Calculator estimates the square footage of a lot, house, or other surfaces in several common shapes. If the surface is complex in shape, it may be possible to section the surface into simple shapes and add their square footages together. Calculating square footage for a circular area Measure the diameter of your circle in feet.