Geometry & Shapes
Cube Calculator
Cube — it uses volume = s³ and surface area = 6s². This page runs that same calculation on your numbers, in your browser: no signup, no uploads, nothing stored.
Give Cube Calculator your side length and it returns the volume and surface area straight away. Built to find the volume and surface area of the solid, it runs entirely on your device.
About this calculator
Get cube right and the rest of the task gets easier. It uses volume = s³ and surface area = 6s². It matters whenever a shape has to be measured, cut, covered or compared and the geometry has to be right first. A cube of side 4: volume = 4³ = 64 , surface area = 6 × 4² = 96 . The tool above does the same computation in your browser — free, private, nothing stored.
How to use
- Enter the length of one edge.
- Press Calculate to measure the cube.
- Read the volume, surface area, and space diagonal.
- Press Reset to try another edge length.
Why use Cube Calculator
Fast
Calculations run in your browser. No round trip to a server.
Private
Your inputs never leave your device. Nothing is uploaded.
Free
No signup, no paywall, no ads-in-results, no watermarks.
Accurate
Uses standard formulas for quick educational estimates; check critical results before relying on them.
Mobile-ready
Optimised for phones, tablets, and desktops alike.
Transparent
Honest disclaimers wherever browser limits or regional rules apply.
Common uses
Use it for 3D modelling and CAD prep
Use it for volume and capacity checks
Use it for packaging and box design
Cube in engineering and design work
Use it when checking a homework answer
Use it for quick volume and surface-area checks
Technical notes
Cube Calculator uses volume = s³ and surface area = 6s².
Results assume exact, idealised shapes; real-world measurement error is not included.
Results are rounded for display; the underlying calculation keeps full precision.
FAQ
How is the space diagonal of a cube found?
It is the edge length times the square root of 3, the longest straight line between opposite corners.
How do volume and surface area relate to the edge?
Volume is the edge cubed and surface area is six times the edge squared.
Are all faces of a cube equal?
Yes. A cube has six identical square faces, so one edge length describes it completely.
Does the Cube Calculator send my data to a server?
No. The Cube Calculator runs entirely in your browser, so nothing you enter is uploaded, stored, or shared.
Worked example
A cube of side 4: volume = 4³ = 64, surface area = 6 × 4² = 96.