Octahedron Calculator
Calculate the volume and surface area of a regular octahedron from its edge length.
- Surface area
- 86.6025
Formula: V = (√2 / 3) × a³
About Octahedron Calculator
Octahedron Calculator is a free online calculator that gives you an instant, accurate result as you type. Calculate the volume and surface area of a regular octahedron from its edge length.
The calculation uses the standard formula V = (√2 / 3) × a³ and updates live with every change to the inputs. Everything runs client-side in your browser — fast, private, and free to use as often as you like.
A regular octahedron looks like two square pyramids glued base to base and has 8 equilateral-triangle faces.
Frequently Asked Questions
Is Octahedron Calculator free to use?
Yes. Octahedron Calculator is completely free, with no sign-up, no downloads, and no usage limits. You can use it as many times as you like on any device with a web browser.
How accurate is this calculator?
The calculator applies the standard formula (V = (√2 / 3) × a³) with full floating-point precision and rounds only the displayed result. For most practical purposes the results are exact.
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