Rex says
The fast lane for the math you almost remember from school. Type the numbers, get the answer, move on with your day.
Try a scenario
Click to load — tweak from there.Inputs
Result
Volume (cu ft)
282.7433
US gallons
2115.07
Litres
8006.39
Cubic yards
10.472
Surface area (sq ft)
245.044
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One click, a permanent link with your numbers baked in.
How to use this
- 1Enter radius (ft).
- 2Enter height (ft).
- 3Read your volume (cu ft) on the right — it updates as you type.
- 4Hit Share to keep the scenario or send it to someone.
About this calculator
Tanks, pipes, columns, and cans are all cylinders. Results include gallons and litres, so it doubles as a tank-capacity tool.
Worked example
Using the values the calculator loads with:
Inputs
- Radius: 3 ft
- Height: 10 ft
Results
- Volume (cu ft): 282.7433
- US gallons: 2,115.07
- Litres: 8,006.39
- Cubic yards: 10.472
- Surface area (sq ft): 245.044
What each field means
Inputs
- Radius (ft)
- The radius used in the calculation, measured in ft. Starts at 3 ft so you have a working example on load.
- Height (ft)
- The height used in the calculation, measured in ft. Starts at 10 ft so you have a working example on load.
Results
- Volume (cu ft)
- Returned as a decimal number and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- US gallons
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Litres
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Cubic yards
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Surface area (sq ft)
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the cylinder volume calculator work?
Tanks, pipes, columns, and cans are all cylinders. Results include gallons and litres, so it doubles as a tank-capacity tool. The underlying maths is: V = πr²h. Surface area = 2πr² + 2πrh.
What do I need to enter?
2 values: radius, and height. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the volume (cu ft) result mean?
It is returned as a decimal number and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Results are rounded for display; the underlying calculation keeps full precision.
Who is this tool for?
It's built for students, developers, and anyone who needs the answer right now without setting up a spreadsheet.
Accuracy and limitations
- Results are rounded for display; the underlying calculation keeps full precision.
- Very large or very small inputs may hit floating-point limits in the browser.
- Inputs outside the accepted range are clamped rather than rejected.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Cylinder Volume Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/cylinder-volume
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/cylinder-volume" target="_blank" rel="noopener">Cylinder Volume Calculator — RevenueLab</a> (2026).</p>
Source: [Cylinder Volume Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/cylinder-volume) (2026).