HR to Salary Calculator

The volume of a solid cylinder is V = π × r² × h, where r is the radius and h is the height. For a hollow cylinder, V = π × h × (R² − r²), where R is the external radius and r is the internal radius.

Select 'Hollow Cylinder' mode, enter the height, external diameter (or radius), and internal diameter (or radius). The calculator computes the volume of the material between the outer and inner surfaces.

For length inputs, we support millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles. For volume output, we support cubic units (mm³, cm³, dm³, m³), liters, milliliters, US gallons, UK gallons, US and UK fluid ounces, and more.

Yes. All calculations use standard mathematical formulas with JavaScript's built-in floating-point arithmetic. The calculator is suitable for educational, engineering, and everyday use. For mission-critical applications, please independently verify results.

Absolutely! The calculator is fully responsive and works on phones, tablets, and desktops. No app download is required.

The diameter is always twice the radius (d = 2r). When you enter one value, the other is automatically calculated for convenience.