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The area of a circle calculator helps you compute the surface of a circle given a diameter or radius. Our tool works both ways — no matter if you're looking for an area-to-radius calculator or a radius to the area one, you've found the right place .
Area of a Circle Calculator. Use this calculator to easily calculate the area of a circle, given its radius in any metric: mm, cm, meters, km, inches, feet, yards, miles, etc.
Area of a circle, formula for area explained with examples, pictures, interactive examples and quiz.
How to Calculate the Area. The area of a circle is: π (Pi) times the Radius squared: A = π r2. or, when you know the Diameter: A = (π/4) × D2. or, when you know the Circumference: A = C2 / 4π.
This area of a circle calculator will help you determine the circumference, diameter, area, and radius of any circle. In the article below, you will find all the circle formulas you will ever need to calculate one of these values.
Calculate the area of a circle given the radius, diameter, or circumference. Plus learn the formulas and steps to find a circle's area.
This calculator will calculate the area of a circle given its diameter, using the famous formula area = pi times (d/2) squared. It supports different units such as meters, feet, and inches. Just type into the box and hit the calculate button.
Evaluate the variables of a circle with our circumference and area of a circle calculator.
Quickly find the area of a circle using our Circle Area Calculator, essential for various geometry tasks and problems.
Area of a Circle formula = Πr 2. radius r: Result window. Download: Use this area calculator offline with our all-in-one calculator app for Android and iOS. Select a different shape: This is a free online tool by EverydayCalculation.com to calculate area of a Circle.