Torus Calculator
Calculate volume and surface area from major and minor radius.
Formula
V = 2π²Rr², SA = 4π²Rr
Volume is 2π² times major radius times minor radius squared. Surface area is 4π² times major radius times minor radius.
Examples
R=5, r=2
R=8, r=3
R=10, r=1
Frequently Asked Questions
What is the volume of a torus?
V = 2π²Rr², where R is the major radius and r is the tube radius.
What is the surface area of a torus?
SA = 4π²Rr.
About this Calculator
Calculate volume and surface area from major and minor radius. All calculations are performed in your browser for instant results. Formulas are mathematically exact using JavaScript's built-in Math functions.