Free Volume Calculator
Volume of common 3D shapes: box, cylinder, sphere, cone.
- Free Forever
- No Registration Required
- Instant Results
- Downloadable Reports
- Mobile Friendly
Inputs
Result
Volume
960.00 cm³
Your result is ready.
Download your free detailed report — inputs, result, formula and explanation included.
Estimates only. Verify with a professional for consequential decisions.
- Always Free
- No Hidden Costs
- No Account Required
- Unlimited Calculations
- Instant Reports
Short answer
Box: L·W·H. Cylinder: π·r²·h. Sphere: 4/3·π·r³. Cone: 1/3·π·r²·h.
What is the Volume Calculator?
Volumes of the four most common 3D shapes, with automatic conversion to liters, gallons, and cubic meters.
How does the Volume Calculator work?
Pick the shape and enter dimensions. The formula uses only the relevant fields.
Formula
Variables
rRadiushHeight
Explanation
For the sphere, dimension 1 is the radius and the other inputs are ignored.
Examples
Example 1: 10 × 8 × 12 cm box
960 cm³ ≈ 0.96 L ≈ 0.254 US gal.
Applications
- Aquarium sizing
- Container capacity
- Concrete estimates
Advantages
- Four shapes in one tool
- Multi-unit output
Limitations
- Rectangular boxes only — for L-shaped tanks, split and sum
Common mistakes
- Using diameter as radius in cylinder/sphere formulas
Tips
- 1 liter = 1000 cm³ = 0.264 US gallon
Related concepts
The Volume Calculator sits inside the Everyday & Utility Calculators hub, in the home & energy cluster. Utility usage and household running costs. Understanding the terms below makes the output easier to interpret and easier to compare against neighbouring measures.
Practical use cases and industry applications
Understanding Volume
Volumes of the four most common 3D shapes, with automatic conversion to liters, gallons, and cubic meters. Within everyday & utility calculators, volume belongs to the home & energy cluster, where it shares terminology and assumptions with closely related tools.
Learning how volume is calculated
For the sphere, dimension 1 is the radius and the other inputs are ignored. Working through the variables one at a time — r, h — makes the result reproducible by hand and easier to sanity-check.
Using volume to make a decision
Aquarium sizing Container capacity Concrete estimates Because outputs depend on the assumptions you enter, run more than one scenario before committing to a figure.
How volume compares with related measures
kilowatt-hour, tariff, standby load, efficiency rating all describe adjacent aspects of home & energy. Comparing this calculator's output against those measures — using the related tools listed on this page — prevents a single metric from being read in isolation.
Frequently asked questions
How do I convert to gallons?
1 US gallon = 3785.41 cm³. Divide cm³ by 3785.41.
Related calculators
These tools share entities, formulas or user intent with the volume calculator.
Other
Free Square Footage Calculator
Area of rectangular rooms, plus optional material cost.
Other
Free Pool Volume Calculator
Gallons in a rectangular pool.
Other
Free AC/Window Unit Sizing Calculator
BTU cooling capacity needed for a room.
Other
Free Battery Backup Runtime Calculator
How long a battery backup will power a load.
Other
Free Concrete Block Wall Calculator
CMU blocks and mortar bags for a wall.
Other
Free Electricity Cost Calculator
Cost of running an appliance per day, month and year.
Other
Free Generator Sizing Calculator
Generator wattage needed to run selected appliances.
Other
Free Pool Chemicals Calculator
Chlorine and pH adjuster dosing by pool volume.
Other
Free Solar Panel Sizing Calculator
Number of solar panels needed to cover energy use.