Torus Surface Area Calculator - Free, Instant, In Your Browser
Enter the major radius and minor radius to calculate the torus's surface area.
How to use Torus Surface Area Calculator
- 1Enter the required date(s) and details above.
- 2Click Calculate - Torus Surface Area Calculator runs instantly, right in your browser.
- 3Read your result below.
Your file is processed in your browser and is never uploaded.
Frequently Asked Questions
What's the formula?
Surface area = 4π² × R × r, where R is the major radius and r is the minor (tube) radius.
Is my data sent to a server?
No - everything runs entirely in your browser with JavaScript. Nothing is uploaded.