Square Footage Calculator
Free square footage calculator supporting rectangles, circles, triangles, trapezoids, and custom shapes. Calculate room areas, estimate paint and flooring costs with waste factors. View results in square feet, square meters, acres, and hectares. Perfect for home improvement and real estate.
Unlock 8 AI-powered analysis tools
Resume scanner, contract analyzer & more — Pro $9/mo
Want more? Unlock the full experience
Compare Pro allowances for your work with Square Footage Calculator
More daily tool uses
500 tool uses per day on Pro
Monthly AI allowance
50 AI uses per month across supported AI tools
Ad-free tools
Use NexTool without ads while your Pro plan is active
Browse thousands of homes for sale near you.
Laser measurers and tape measures for precise results.
Sponsored · We may earn a commission at no cost to you
How to Use Square Footage Calculator
- 1Select a shape (rectangle, circle, triangle, etc.).
- 2Enter the dimensions in your preferred unit.
- 3View the area with automatic unit conversions.
- 4Use the cost estimator for flooring or paint projects.
Frequently Asked Questions
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 an 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.
The Free plan includes 10 tool uses per day. Some features require an account or a paid plan. Check the controls on the tool page and Pricing for the applicable limits.
The Square Footage Calculator returns results based on the inputs and the tool methodology. Check assumptions, units and source dates. Treat projections as estimates. 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.
No spam. Unsubscribe anytime.
About Square Footage Calculator
Free square footage calculator supporting rectangles, circles, triangles, trapezoids, and custom shapes. Calculate room areas, estimate paint and flooring costs with waste factors. View results in square feet, square meters, acres, and hectares. Perfect for home improvement and real estate.
Use the controls shown by Square Footage Calculator to generate and review your result. Available features and usage limits depend on your plan. Check the tool's instructions and privacy information before submitting data.
Embed This Tool
Add Square Footage Calculator to your website. Paste the code below into your HTML. The iframe auto-resizes to fit the tool content.
Related Tools
Learn More
Get Free Financial Guides
Guides and updates about NexTool calculators.