Use this free circumference calculator to find the area, circumference and diameter of a circle.

Aug 3, 2023 · The circumference of a circle is the distance around the boundary of the circle. It is the same as calculating the perimeter of any polygon such as triangle, square, and rectangle.

Oct 7, 2025 · Keep reading for everything you need to know about how to figure out the circumference of a circle using either the diameter or the radius. We've even got a circumference calculator to make …

What is Circumference? Circumference is basically the length when measured through the boundary of a circle. It is same as the perimeter of other polygons, just that it has a special name called …

Use this calculator to easily calculate the circumference of a circle, given its radius in any metric: mm, cm, meters, km, inches, feet, yards, miles, etc. If you know the diameter, first divide it by two to get …

The circumference of the circle is the length of its boundary. Explore and learn to calculate the circumference of a circle, with concepts, definitions, formulas, solved examples, and practice problems.

This calculator computes the values of typical circle parameters such as radius, diameter, circumference, and area, using various common units of measurement.

The circumference is the arc length of the circle, as if it were opened up and straightened out to a line segment. [1] More generally, the perimeter is the curve length around any closed figure.

Use the calculator above to calculate the properties of a circle. Enter any single value and the other three will be calculated. For example: enter the radius and press 'Calculate'. The area, diameter and …

What is circumference anyway? Answer: The circumference of a circle is the edge or rim of a circle itself. It is the equivalent of 'perimeter' for a circle. The glowing part in the circle above is the …