Frequently Asked Questions
Everything you need to know about the Volume Calculator.
Which shapes are supported?
Sphere, cube, rectangular prism, cylinder, cone, pyramid (square/rectangular base), triangular prism, and ellipsoid.
How is cone volume calculated?
Using V = ⅓πr²h, where r is the base radius and h is the height.
Does it show the formula used?
Yes, each shape shows its formula with your values substituted in.
Are results exact or decimal?
Both — sphere, cylinder, cone, and ellipsoid results are shown in exact π-form alongside decimals.
Does it calculate surface area too?
Yes, total surface area is shown as a bonus output for each shape.
What units does it use?
It's unit-agnostic; results are labeled units³ matching whatever unit you entered.
What if I enter a negative dimension?
It's rejected with a clear validation message.
Can I calculate a pyramid with a rectangular (non-square) base?
Yes, both square and rectangular base pyramids are supported.
Is it free?
Completely free, no sign-up or limits.
Does it work on mobile?
Yes, fully responsive.