Cylinder Calculator
Enter a radius and height below to instantly get the volume and surface area of a cylinder.
Volume
226.1947
Surface Area
207.3451
Cylinder Formulas
Volume = πr²h. Surface area = 2πrh + 2πr².
Worked example
A cylinder with radius 4 and height 10.
Volume = π × 4² × 10 = π × 160 ≈ 502.65
Surface area = 2π(4)(10) + 2π(4²) = 80π + 32π = 112π ≈ 351.86
Frequently Asked Questions
What is the formula for the volume of a cylinder?
Volume = π × r² × h, where r is the radius of the circular base and h is the height.
What is the formula for the surface area of a cylinder?
Surface area = 2πrh + 2πr² — the curved (lateral) surface plus the two circular ends.
What's the difference between lateral surface area and total surface area?
Lateral surface area (2πrh) is just the curved side, without the top and bottom circles. Total surface area adds the two circular ends (2πr²) on top of that.
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