Volume Calculator
Free online volume calculator for 3D shapes. Calculate the volume of a box, cube, cylinder, sphere, cone, and pyramid. Get results in cm³, m³, in³, ft³, liters, and US gallons. 100% client-side.
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What is Volume Calculator?
The Volume Calculator is a free, browser-based tool that computes the volume of six common 3D shapes — rectangular box, cube, cylinder, sphere, cone, and pyramid — using standard geometric formulas. Enter your dimensions in centimeters (metric) or inches (imperial), and the tool instantly returns the volume in cubic centimeters, cubic meters, cubic inches, cubic feet, liters, and US gallons, along with the exact substituted formula. Everything runs entirely in your browser with no data sent anywhere.
Key Benefits
- Six shape types with correct geometric formulas for accurate results every time
- Instant conversion between metric and imperial volume units — no manual math needed
- Displays the exact formula and substituted values, making it ideal for learning and verification
- Shows six output units simultaneously so you can read whichever unit you need at a glance
- 100% client-side and private — no sign-up, no tracking, and works offline
Common Use Cases
- •Engineering and construction estimating the volume of concrete, soil, or material to fill a space
- •Tank and container sizing — find the capacity in liters or gallons of a cylindrical or box tank
- •Homework and education — verify geometry problems with the full formula shown
- •Shipping and packaging — calculate the cubic volume of a box for freight costing
- •Science experiments — quickly find the volume of a sphere or cone from measured dimensions
How to Use the Volume Calculator
- Choose a shape: Click one of the six shape buttons — Box, Cube, Cylinder, Sphere, Cone, or Pyramid — to match the object you are measuring.
- Pick a unit system: Toggle between Metric (cm) or Imperial (in) depending on the units of your measurements.
- Enter dimensions: Type the required dimensions for the selected shape (length, width, height, radius, or side). The result updates instantly as you type.
- Read and copy the result: Review the volume in six units — cm³, m³, in³, ft³, liters, and US gallons — plus the formula used, then click Copy to save the summary.
Key Features
- Six 3D shapes supported — box, cube, cylinder, sphere, cone, and pyramid — each with its correct geometric formula
- Dual unit systems: switch between metric (cm) and imperial (in) input dimensions with a single click
- Instant multi-unit output — cm³, m³, in³, ft³, liters, and US gallons displayed simultaneously
- Live calculation that updates the result the moment you type or change any dimension
- Shows the exact substituted formula so students and engineers can verify the math step by step
- 100% client-side, works offline, and no data leaves your browser — no sign-up required