Math.PI
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The Math.PI
static data property represents the ratio of the circumference of a circle to its diameter, approximately 3.14159.
Try it
Value
Property attributes of Math.PI | |
---|---|
Writable | no |
Enumerable | no |
Configurable | no |
Description
Because PI
is a static property of Math
, you always use it as Math.PI
, rather than as a property of a Math
object you created (Math
is not a constructor).
Examples
Using Math.PI
The following function uses Math.PI
to calculate the circumference of a circle with a passed radius.
js
function calculateCircumference(radius) {
return Math.PI * (radius + radius);
}
calculateCircumference(1); // 6.283185307179586
Specifications
Specification |
---|
ECMAScript Language Specification # sec-math.pi |
Browser compatibility
BCD tables only load in the browser