Math

Volume Calculator

Volume of common 3D shapes: cube, box, sphere, cylinder, cone, square pyramid, and capsule.

Inputs

Shape

Dim 1 (a / l / r)

Dim 2 (w / h)

Dim 3 (h, if box)

Length unit

Result

Volume (cm³)

How it's calculated

Cube a³ · Box l·w·h · Sphere 4/3·π·r³ · Cylinder π·r²·h · Cone 1/3·π·r²·h · Pyramid 1/3·a²·h · Capsule π·r²·h + 4/3·π·r³.

What's a capsule?

A cylinder with a hemispherical cap on each end — think of a pill or a propane tank.

How do I convert to liters?

1 liter = 1000 cm³ = 0.001 m³. This calculator adds a liter reading automatically for cm and m inputs.

Math

Surface Area Calculator

Total surface area of common 3D shapes: cube, box, sphere, cylinder, and cone.

Math

Circle Calculator

Enter any one of radius, diameter, circumference, or area — get all four.

Math

Percentage Calculator

What is X% of Y, X is what % of Y, and percentage change — all in one place.

Math

Percent Change Calculator

Percentage increase or decrease between two numbers.