Cylinder Volume Calculator
Enter a cylinder's radius and height to calculate its volume, using V = πr²h.
Last updated: September 25, 2026
Frequently asked questions
What's the formula for the volume of a cylinder?
V = πr²h, where r is the radius of the circular base and h is the height. This comes from multiplying the area of the circular base (πr²) by the height, the same logic used for any prism.
Is 'volume for a cylinder,' 'formula of volume of a cylinder,' and 'volume of the cylinder formula' the same question?
Yes - these are all reordered phrasings of the same search: the formula for a cylinder's volume, V = πr²h. This calculator plugs your radius and height into that formula directly, so you don't need to do the arithmetic by hand.
What about 'formula cylinder volume,' 'formula for volume of cylinders,' 'volume equation for cylinder,' and 'volume of a drum'?
All the same shape and formula (V = πr²h), just phrased differently. A "drum" - like a 55-gallon drum - is simply a cylinder, so a drum volume formula is a cylinder volume formula; this calculator works for any cylindrical container, whether you call it a cylinder, tube, or drum.
Does 'cylinder equation volume,' 'volume cylinder formula,' 'formula of the volume of a cylinder,' and 'volume formula cylinder' mean anything different?
No - every reordering of "cylinder," "volume," "formula," and "equation" here points to the same thing: V = πr²h. This calculator computes it directly from your radius and height, whichever way you searched for it.
What about 'cylinder volume equation,' 'formula for a cylinder volume,' 'formulas for volume of a cylinder,' and 'formula volume for cylinder'?
Same answer every time: the cylinder volume formula is V = πr²h. However this phrase gets reordered, pluralized, or abbreviated, it's asking for that one formula, which this calculator applies to your radius and height automatically.
Is 'volume of cylinder' (without 'a' or 'the') the same search?
Yes - dropping small words like "a" or "the" doesn't change the meaning. "Volume of cylinder" is asking for the same formula, V = πr²h, as every other phrasing on this page.
How do I find the volume of a cylinder if I only know the diameter?
Divide the diameter by 2 to get the radius first, then use V = πr²h. For example, a cylinder with a 10 cm diameter and 20 cm height has a radius of 5 cm, giving a volume of π × 5² × 20 ≈ 1,570.8 cm³.
What's the difference between total surface area and lateral surface area?
Lateral (side) surface area only counts the curved wall of the cylinder (2πrh); total surface area adds the two flat circular ends (2πr²) on top of that. Use lateral area alone for things like labeling a can's wraparound label, and total area for anything covering the whole object.