Square Footage Calculator

For a rectangle, multiply length × width. For example, a 12ft × 15ft room = 180 sq ft.

Measure each room's square footage and add 10% for waste and cuts. The calculator does this automatically.

Use the formula: Area = π × radius². Enter the radius or diameter and the calculator handles the math.

The Square Footage Calculator is a free online tool that lets you calculate area for rectangles, circles, triangles, and rooms with cost estimates. It is part of NexTool's collection of free tools designed to help you work faster and more efficiently.

Yes, the Square Footage Calculator is 100% free to use with no limitations. There is no registration required, no daily usage caps, and no hidden fees. You can use it as many times as you need.

The Square Footage Calculator uses industry-standard formulas and algorithms to deliver reliable results. While the tool is designed for accuracy, results should be used as estimates and guidance. For critical decisions, always consult a qualified professional.

Yes, the Square Footage Calculator is fully responsive and works perfectly on smartphones, tablets, and desktop computers. Simply open NexTool in your mobile browser and navigate to the tool — no app download required.