Cylinder Volume Calculator
Find the volume of a cylinder — a can, tank, pipe, drum or round column — from its radius or diameter and its height. The result also shows the area of one end, the curved side and the whole surface, and the volume can be read in gallons or liters.
- Area of one end
- 12.57 in²
- Side (lateral) area
- 62.83 in²
- Total surface area
- 87.96 in²
Saved setups
Save a set of inputs you reuse — your usual rate, your loan, your room sizes — and load it back in one tap.
Your recent calculations
Results you calculate here are kept on this device so you can come back to them.
Formula
How to use it
- Choose whether you measured the radius or the diameter.
- Enter that value and the height, each in its own unit.
- Pick the volume unit: cubic inches or feet for space, gallons or liters for liquid.
Worked examples
Radius 2 in and height 5 in: 62.83 in³, which is 1.03 liters
- Volume
- 62.83 in³
- Area of one end
- 12.57 in²
- Side (lateral) area
- 62.83 in²
- Total surface area
- 87.96 in²
A tank 1 m across and 2 m tall: 1.571 m³, or 1,570.8 liters
- Volume
- 1,570.8 L
- Area of one end
- 0.79 m²
- Side (lateral) area
- 6.28 m²
- Total surface area
- 7.85 m²
Tanks and pipes
For capacity, measure the inside diameter. A cylinder lying on its side holds the same when full — use its length as the height. One cubic foot is about 7.48 US gallons, so a tank 2 ft across and 4 ft tall holds 12.57 ft³, or about 94 gallons.
Questions people ask
What is the volume of a cylinder with radius 2 and height 5?
π × 2² × 5 = 62.83 cubic units.
How do I calculate the volume from the diameter?
Halve the diameter to get the radius, then use π × radius² × height. Or choose “Diameter” above and enter it directly.
How many liters does a cylinder 1 m wide and 2 m tall hold?
π × 0.5² × 2 = 1.571 cubic meters, which is 1,570.8 liters.