Calculators

Hollow Cylinder Calculator

Calculate hollow cylinder material volume, wall thickness, and inner, outer, and total surface areas privately in your browser.

Enter outer radius R, inner radius r, and perpendicular height h in the same length unit, from 1e-50 to 1e50. Use radii, not diameters, with R greater than r. This models a straight tube with concentric circular walls. Total surface area includes both curved walls and both annular ends.

Measure the material and surfaces of a circular tube.

A hollow cylinder is a straight tube with concentric circular walls. Enter outer radius R, inner radius r, and perpendicular height h, with R > r > 0. Wall thickness = R − r; one annular end area B = π(R − r)(R + r); material volume V = Bh. Outer curved area = 2πRh; inner curved area = 2πrh; total exposed surface area = 2πh(R + r) + 2B, including both annular ends. For R = 5, r = 3 and h = 10, volume is 160π ≈ 502.654824574 cubic units and total surface area is 192π ≈ 603.185789489 square units. The volume measures wall material, not the hollow interior capacity. Divide diameters by two before entering them. Use one consistent length unit from 1e-50 to 1e50; scientific notation is accepted. Results use browser floating-point arithmetic rounded to 12 significant digits. Extremely close radii can round to the same number and are rejected. All calculations stay in your browser.

Frequently Asked Questions

Everything you need to know about this tool, how it works, and privacy.

How do I calculate hollow cylinder volume?

Use V = π(R² − r²)h for outer radius R, inner radius r, and height h. With radii 5 and 3 and height 10, material volume is 160π, approximately 502.654824574 cubic units.

What does total surface area include?

It includes the outer curved wall, inner curved wall, and two flat annular ends. It does not add disks across the openings.

Is this the volume inside the tube?

No. This is the volume of the tube wall material. Interior capacity is πr²h, which you can calculate with the cylinder calculator using the inner radius.

Which inputs and units can I use?

Enter positive radii and height from 1e-50 to 1e50, with outer radius greater than inner radius. Use the same length unit throughout. Divide diameters by two. Results are in cubic units for volume and square units for areas.

Are my measurements uploaded?

No. Calculation, reset, and copying run in your browser without uploading measurements.