CALCULATOR
Circumference of a Cylinder Calculator
Find distance around one circular end. Example: Radius: 2 m gives 12.5663706144 m. Single base circumference, not cylinder surface area. Flat Euclidean geometry; enter stated meter measurements. No material thickness, waste, structural recommendation or curved earth. Display rounding does not change calculation.
Single base circumference, not cylinder surface area. Flat Euclidean geometry; enter stated meter measurements. No material thickness, waste, structural recommendation or curved earth. Display rounding does not change calculation. Derivation: Circular end is a circle with radius r.
Accepted inputs: Radius: 0.001 to 1,000 m.
How the calculation works
C = 2πr
Worked example
With radius 2 m, distance around one circular end is 12.56637061 m.
Assumptions and limits
Single base circumference, not cylinder surface area. Flat Euclidean geometry; enter stated meter measurements. No material thickness, waste, structural recommendation or curved earth. Display rounding does not change calculation. Derivation: Circular end is a circle with radius r.