Skip to main content

Cuboid Calculator

Geometry

Volume, surface area, space diagonal and edge sum

Quick Answer

Cuboid Calculator: Volume, surface area, space diagonal and edge sum. Volume V = lwh.

Loading

Was this tool helpful?

How to Use

  1. Enter known values: fill sides, radius or angles in the Cuboid Calculator.
  2. Auto-solve the rest: all unknowns are solved instantly — no manual derivation.
  3. See formula and steps: the result panel shows the formula used and the substitution.
  4. Try another case: change any known value to solve again.

Key Points

  • Cuboid Calculator is a free online geometry tool — open and use, no sign-up.
  • All calculations run locally in your browser; your data never leaves the device.
  • Key capability: Volume, surface area, space diagonal and edge sum.
  • Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

Cuboid formulas (length l, width w, height h)

Volume V = lwh
Surface S = 2(lw + lh + wh)
Space diagonal d = √(l² + w² + h²)
Total edge length = 4(l + w + h) (12 edges)
Cube special case: V=a³, S=6a², d=a√3

Example: 5×4×3 box → V=60, S=94, d=√50≈7.07.

FAQ

How do I use the Cuboid Calculator?
Open the page and fill in the input fields — results update automatically. Volume, surface area, space diagonal and edge sum.
Are the results accurate?
Yes. Standard formulas and conversion factors are used and verified.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Does it work on mobile?
Yes. The responsive design works on phones, tablets and desktops.
Is my data saved?
No. Everything runs locally in your browser.

Related Tools

Circle CalculatorArea, circumference, diameter and arc lengthTriangle CalculatorArea, perimeter, angles and heightRectangle CalculatorArea, perimeter and diagonalSphere CalculatorVolume, surface area and diameter

Related Guides

Source & Updates

Based on standard Euclidean geometry formulas. Last updated: 2025-07

Last updated:

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Cite this page: YiJianSuan. Cuboid Calculator[EB/OL]. https://www.yijiansuan.com/en/c/geometry/cuboid

Results provided by this tool are for reference only and do not constitute professional advice.