Volume Calculator
Instantly calculate the volume of various 3D shapes and convert between cubic units, liters, and gallons with ease.
Calculate Your 3D Volume
Select your shape, enter the dimensions, and instantly see the total volume along with practical conversions to liters and gallons.
Volume Estimator
Calculate space and capacity for common shapes.
Measurement Checklist
Best practices for accurate volume calculation.
How to Use This Tool
4 steps to find your volume
Select the Shape
Choose the 3D shape that best matches your object: Box, Cylinder, Sphere, or Cone.
Choose Your Unit
Select the unit of measurement you are using (cm, m, inches, or feet). The calculator will handle the rest.
Enter Dimensions
Input the required measurements. The form will dynamically update to show only the fields needed for your chosen shape.
View Conversions
Hit calculate to see the volume in cubic units, along with instant conversions to liters and US gallons for practical use.
Common Volume Formulas
A summary of the standard mathematical formulas used to calculate the volume of basic 3D shapes.
| Shape | Formula | Variables | Common Uses |
|---|---|---|---|
| Rectangular Box | L × W × H | L = Length, W = Width, H = Height | Shipping boxes, rooms, storage containers. |
| Cylinder | π × r² × H | r = Radius, H = Height | Pipes, water tanks, cans, pillars. |
| Sphere | 4/3 × π × r³ | r = Radius | Balls, spherical tanks, globes, planets. |
| Cone | 1/3 × π × r² × H | r = Radius, H = Height | Funnels, traffic cones, party hats, silos. |
Volume Calculator FAQ
Answers to the most frequently asked questions about calculating volume, unit conversions, and geometric formulas.
To calculate the volume of a rectangular box, multiply its length by its width and then by its height (Volume = Length × Width × Height). Ensure all measurements are in the same unit before multiplying.
The volume of a cylinder is calculated using the formula V = π × r² × h, where ‘r’ is the radius of the circular base and ‘h’ is the height of the cylinder. Pi (π) is approximately 3.14159.
To convert cubic meters (m³) to liters, multiply the volume in cubic meters by 1,000. For example, 2 cubic meters is equal to 2,000 liters. Conversely, divide liters by 1,000 to get cubic meters.
Volume refers to the amount of 3D space an object occupies, while capacity refers to the maximum amount of substance (like liquid or gas) that a container can hold. Capacity is usually measured in liters or gallons, while volume is measured in cubic units (e.g., cm³, m³).