Circle Area And Circumference Calculator

Free circle area and circumference calculator for circle calculator. Enter the values below to get an instant result.

JavaScript is required for live calculation.

You can still read how Circle Area And Circumference Calculator works, the formula, examples, and FAQs below.

Radius or diameter

Inputs

Radius or diameter

Results update when you click Calculate.

Circumference

628.3185

2 * Math.PI * (radius_or_diameter)

Ad · below results slot

Recently used

Tools you open will show up here on this device — with your last inputs when available.

What this result means

Free circle area and circumference calculator for circle calculator. Enter the values below to get an instant result. Calculate circle area and circumference: 2 * Math.PI * (radius_or_diameter).

Assumptions

Rule dependency: Universal formula.

How it works

Calculate circle area and circumference: 2 * Math.PI * (radius_or_diameter).

Example

Example: “circle calculator”. Enter your values and click the button to get a result.

Frequently asked questions

What does this circle area and circumference calculator do?+

It helps you calculate circle area and circumference. Typical search: “circle calculator”.

How should I read the result?+

Calculate circle area and circumference using radius or diameter. Result: area; circumference.