1
Choose radius or diameter
Tell the calculator which circular measurement you have.
Free geometry and tank calculator
Cylinder Volume Calculator
A cylinder volume calculator finds the space inside a cylinder from its radius or diameter and height. Use it to apply V = πr²h and convert the result into cubic units, liters, or gallons.
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Cylinder dimensions
Enter the measurements
Use positive measurements greater than zero. Both dimensions use the unit selected below.
Cylinder volume result
942.477796 cm³
0.942478 liters · 0.248976 US gallons
Step-by-step formula
- 1. Use V = πr²h.
- 2. Substitute: V = π × 5² × 12.
- 3. Volume = 942.477796 cm³.
Liters
0.942478 L
Milliliters / cm³
942.477796 mL
Cubic meters
0.000942 m³
Cubic millimeters
942,477.796077 mm³
Cubic inches
57.513524 in³
Cubic feet
0.033283 ft³
US gallons
0.248976 gal
Imperial gallons
0.207316 imp gal
Capacity conversions assume a perfectly full interior cylinder. Real tanks may have wall thickness, rounded ends, fittings, or unused headspace.
How to Use the Cylinder Volume Calculator
2
Enter the dimensions
Add the measurement and cylinder height using one unit.
3
Review and convert
Check the substituted formula and read the volume in cubic units, liters, or gallons.
Cylinder Volume Calculator FAQ
What is a cylinder volume calculator?
A cylinder volume calculator finds the three-dimensional space inside a cylinder from its radius or diameter and height using V = πr²h.
How do you calculate cylinder volume from diameter?
Divide the diameter by two to get the radius, square the radius, then multiply by pi and the cylinder height.
How do I convert cylinder volume to liters?
One cubic meter equals 1,000 liters, and one cubic centimeter equals one milliliter. This calculator performs those conversions automatically.
Can this calculate a cylindrical tank capacity?
Yes, for a tank with a straight circular interior. Measure the inside diameter and usable height, then allow separately for wall thickness, rounded ends, fittings, and headspace.
Does the calculator support inches and feet?
Yes. You can enter millimeters, centimeters, meters, inches, or feet and see cubic and capacity conversions in both metric and US customary units.