formula directory logo

HOSTING A TOTAL OF 318 FORMULAS WITH CALCULATORS

Circumference of Circle

The circumference of a circle is the length around the circle. The term is used when measuring physical objects, as well as when considering abstract geometric forms. The first constant is the ratio of a circles circumference to its diameter and equals Pi. While the second constant is the ratio of the diameter and two times the radius and is used as to convert the diameter to radius in the same ratio as the first, π.Both proportionality constants combine in respect with circumference, diameter, and radius to become the circumference of circle.

2Πr

Finds the circumference of circle

ENTER THE VARIABLES TO BE USED IN THE FORMULA