Free Volume Calculator — Box, Cylinder, Sphere

Calculate 3D volume instantly with visual comparisons

Volume Calculator

Choose a shape, enter dimensions, and get volume in cubic units instantly. This tool also shows formula steps and a visual size bar so results are easier to interpret.

V = l * w * h
V = pi * r^2 * h
V = (4 / 3) * pi * r^3
Calculated Volume
Enter dimensions to begin
Output will be shown in cubic units such as cm^3, m^3, in^3, or ft^3.
Shape Box
Formula l * w * h
Relative scale of current result

How this result is calculated

  1. Choose a shape and enter its dimensions.
  2. The tool applies the matching volume formula.
  3. The output is displayed in cubic units based on your input unit.

Volume Reference Guide

Use these mental anchors to interpret your result quickly.

1,000 cm^3

Exactly 1 liter. Useful for bottles, meal prep, and lab containers.

61 in^3

Roughly 1 liter in imperial units. Good quick conversion anchor.

35.3 ft^3

Exactly 1 cubic meter. Common in shipping and room-scale volume estimates.

About This Volume Calculator

Volume measures how much three-dimensional space an object occupies. This calculator supports three common shapes: rectangular boxes, cylinders, and spheres. It is useful for packaging, fluid containers, storage planning, school math, and engineering quick checks.

Tip: keep all inputs in the same unit to avoid conversion mistakes. If dimensions are in centimeters, the final output is cubic centimeters.

Privacy & Limitations

  • All calculations run entirely in your browser -- nothing is sent to any server.
  • Results are computed using standard formulas and should be verified for critical applications.

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Volume Calculator FAQ

How do you calculate box volume?

Multiply length by width by height. Formula: V = l * w * h.

How do you calculate cylinder volume?

Multiply pi by radius squared and then by height. Formula: V = pi * r^2 * h.

How do you calculate sphere volume?

Multiply four-thirds by pi and radius cubed. Formula: V = (4/3) * pi * r^3.

What unit is the output in?

Volume uses cubic units based on your input unit. If your dimensions are in centimeters, the result is in cubic centimeters (cm^3).

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