Cylinder Calculator
Enter a cylinder's radius and height to compute its volume, lateral surface area, total surface area and base area. Results are computed at full precision and displayed to your chosen decimals.
Enter dimensions
Enter radius and height, then press Calculate.
Cylinder formulas
Base area: A_base = πr²
Lateral surface area: A_lat = 2πrh
Total surface area: A_total = 2πr² + 2πrh = 2πr(r + h)
Volume: V = πr²h
Space diagonal: d = √((2r)² + h²)
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Frequently asked questions
Lateral surface area is just the curved side of the cylinder (like the label on a can). Total surface area includes the lateral side plus the two circular ends. Total = lateral + 2 × base area.
From V = πr²h, rearrange to r = √(V / (πh)). You still need the height to determine the radius uniquely.