CALCULATOR
Area of a Circle Calculator
Area of a Circle. Example: Radius: 2 gives 12.5663706144 m². A flat circle: enter radius in meters, not diameter, from 0.001 to 1,000,000 m. Area is in square meters. Curved surfaces and material waste are excluded.
How the calculation works
π × radius²
Worked example
With radius 1 m, area is 3.141592654 m².
Assumptions and limits
A flat circle: enter radius in meters, not diameter, from 0.001 to 1,000,000 m. Area is in square meters. Curved surfaces and material waste are excluded.