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3D Geometry Calculator

Compute the volume and surface area of spheres, cylinders, cones, rectangular prisms, and regular prisms.

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Compute the volume and surface area of spheres, cylinders, cones, rectangular prisms, and regular prisms. Ideal for architecture, fabrication, education, and lab work.

Your inputs sync to the query string, so you can share or reopen exact calculations on any device.

Sphere

Feed the radius to obtain volume and surface area—great for tanks, drops, or domes.

Use any unit so long as you keep it consistent across dimensions.

Results

Volume
--
Surface area
--

Cylinder

Enter base radius and height to get volume, total surface area, and lateral area.

Supply the radius of the circular base.
Enter the perpendicular height of the cylinder.

Results

Volume
--
Surface area
--
Lateral area
--

Cone

Calculate volume, surface area, and slant height from the radius and height.

Enter the radius of the circular base.
Provide the vertical height from base to apex.

Results

Volume
--
Surface area
--
Slant height
--
Lateral area
--

Rectangular prism

Combine length, width, and height to determine volume, surface area, and the space diagonal.

Enter the longest side or depth.
Supply the shorter horizontal dimension.
Provide the vertical dimension.

Results

Volume
--
Surface area
--
Space diagonal
--

Regular prism

Handle prisms with regular polygon bases—see volume, surface area, base area, and lateral area in one go.

Enter an integer of 3 or more.
Provide the length of one polygon side.
Enter the height of the prism.

Results

Volume
--
Surface area
--
Base area
--
Lateral area
--

FAQ

How should I handle units?

Use the same unit for every dimension. Volume is returned in cubic units and surface area in square units.

Does the shared URL keep my inputs?

Yes. Values are stored in the query string so anyone opening the link will see the same setup.

How it's calculated

Hoe het wordt berekend

  • Standaardformules (bol, cilinder, kegel, prisma) toegepast op de ingevoerde maten.
  • Consistente eenheden; afronding volgens weergave-precisie.
  • URL bewaart invoer om het resultaat te reproduceren.