Calculates circle area and circumference of a circle fast and easy. Specify your desired dimension than press Calculate button to find the circumference of a circle. Calculate the area of a circle, circumference of a circle, radius of a circle and diameter of a circle. Detailed and accurate calculation of area of a circle and circumference of a circle. In app you can save your calculation data for future uses. Circle calculator is all what you need to calculate area of a circle and circumference of a circle. If you have any suggestions please don't hesitate to contact me.