Circle calculators

Use these circle calculators below and choose calculations you need. You can find there formulas, sketch and practical use of calculations.

Circle area calculator, circumference
Circle area calculator, circumference
Circle segment calculator
Circle segment calculator
Circle sector calculator
Circle sector calculator

Circle defintion

A circle is a set of points in a plane whose distance from a fixed point (the centre of a circle) is less than or equal to a fixed positive number (called a radius).

Circle calculations

Use calculators to make circle calculations of radius, diameter, circumference (perimeter), area (circular area), chord, arc, circle segment and circle sector.