Enter both values below

<-- Major Radius (R)
<-- Minor Radius (r)

How does the Torus Calculator work?
Free Torus Calculator - Calculates the volume of a torus and surface area of a torus given major radius and minor radius.
This calculator has 2 inputs.

What 4 formulas are used for the Torus Calculator?

r = inner radius
R = outer radius
SA = 4π2Rr
V = 2π2Rr2

For more math formulas, check out our Formula Dossier
What 4 concepts are covered in the Torus Calculator?
Distance from the center of a circle to the edge
surface area
the amount of space covering the outside of a three-dimensional shape.
A donut shape
SA = 4π2Rr
V = 2π2Rr2
quantity of 3-dimensional space
Example calculations for the Torus Calculator

Torus Calculator Video

Torus Calculator Video