Square Footage Calculator
Calculate square footage quickly and accurately for rectangles, circles, triangles, trapezoids, sectors, parallelograms, and more. Enter your dimensions, quantity, and optional price to calculate total area and estimated cost.
What Is Square Footage?
Square footage is a measurement of the area of a surface. It is commonly used for rooms, floors, walls, land, and other spaces.
The calculation depends on the shape of the area. Rectangles, circles, triangles, trapezoids, sectors, parallelograms, and other shapes use different formulas.
Square Footage Conversion Reference
43,560 square feet
9 square feet
10.7639 square feet
0.006944 square feet
Frequently Asked Questions
How do I calculate square footage?
For a rectangular area, multiply the length by the width. For other shapes, select the appropriate shape in the calculator and enter its required dimensions.
Can I calculate square footage in meters?
Yes. Select Meters as the measurement unit. The calculator calculates the area in square meters and also converts the total area to square feet.
Can I calculate the cost of an area?
Yes. Enter the price per square unit in the optional Price field. The calculator will multiply the total area by the price and display the estimated cost.
What shapes can this calculator calculate?
The calculator supports rectangles, rectangle borders, circles, rings, triangles, trapezoids, sectors, and parallelograms.
Can I calculate a triangle using three sides?
Yes. Select Triangle with Edge Lengths and enter all three side lengths. The calculator uses Heron's formula to calculate the area.
Disclaimer
This calculator is provided for general mathematical, planning, and educational purposes. The estimated cost is based only on the area, quantity, and price entered by the user and does not account for labor, materials, waste, taxes, delivery, installation, or other project-specific costs. SmartMyTools does not guarantee that the results are suitable for professional, construction, engineering, commercial, or other specialized applications.