# Volume Calculator

> Volume calculator: compute volume for boxes, cylinders, spheres, cones, and more shapes with formulas shown. Free, runs locally in your browser, no signup.

- **Canonical URL:** https://boringtoolskit.com/volume-calculator/
- **Category:** Everyday Calculators
- **Evidence level:** authored-methodology
- **Reviewed:** August 2026
- **Last verified:** 2026-10-12
- **Privacy:** Inputs and results stay in this browser unless the page clearly labels an external request.

## How it works

Cube: V = a^3. Rectangular box: V = a x b x c. Cylinder: V = pi x r^2 x h.

## Worked example

A cube with 3-unit sides holds 27 cubic units; a 3 x 5 box needs a third dimension to compute volume.

## Sources

- [Calculation methodology and verification standard](/methodology/)

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