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Cylinder Calculator

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Volume = πr²h. Surface area = 2πr(r + h). Litres assume the dimensions are in centimetres (1 litre = 1000 cm³). With an inner radius the volume is the pipe wall: π(R² − r²)h.

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Result visualization

Find a cylinder's volume — also in litres — total and lateral surface area from its radius and height, with an open-top option and a hollow pipe mode when you add an inner radius, formulas shown, free and instant.

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UNDERSTAND YOUR RESULTS

Cylinder Calculator guide

Find a cylinder's volume — also in litres — total and lateral surface area from its radius and height, with an open-top option and a hollow pipe mode when you add an inner radius, formulas shown, free and instant.

How to use this tool

  1. Enter Radius, Height, Inner radius (hollow pipe, optional), Top and bottom.
  2. Change a value to update the results and illustration. Check any validation message before using the output.
  3. Copy the results or download CSV. Reset restores the example values.

A worked example

Radius 3 and height 10 give volume 90π, about 282.7433 cubic units — 0.283 litres if the units are centimetres. An outer radius of 5 with an inner radius of 4 and height 10 makes a pipe whose wall volume is about 282.74 cubic units; an open top counts one base instead of two.

What you can do with this tool

How it works

Volume = πr²h. Surface area = 2πr(r + h). Litres assume the dimensions are in centimetres (1 litre = 1000 cm³). With an inner radius the volume is the pipe wall: π(R² − r²)h.

Frequently asked questions

How should I interpret the illustration?

It is a visual aid, not a replacement for the numeric output. Some charts compare values with different units, and those magnitudes are not directly comparable.

Can I use the result without checking the inputs?

Check units, signs, assumptions and rounding first. The tool cannot know whether the values you enter describe the real situation correctly.