Convert square inches (sq in) to another unit of area such as square miles, acres, or square yards, and see the conversion formulas.| Inch Calculator
Calculate how much plywood is needed to sheath a roof.| Inch Calculator
Use the area calculator to find the area of seventeen different shapes, plus learn the formulas and steps to calculate it.| Inch Calculator
Find the square footage of an area, property, building, or shape and calculate project costs by entering the price per square foot.| Inch Calculator