JavaScript Number EPSILON

let x = Number.EPSILON;

Description

Number.EPSILON returns the difference between the smallest floating point number greater than 1 and 1.

Number.EPSILON has the value of 2.220446049250313e-16.

EPSILON is a property of the JavaScript Number object.

You can only use it as Number.EPSILON.

Using x.EPSILON, where x is a variable, will return undefined:

let x = 100;
x.EPSILON;

Number.EPSILON

Type	Description
Number	2.220446049250313e-16

Number.EPSILON is an ECMAScript6 (ES6) feature.

ES6 (JavaScript 2015) is supported in all modern browsers since June 2017:


Chrome 51	Edge 15	Firefox 54	Safari 10	Opera 38
May 2016	Apr 2017	Jun 2017	Sep 2016	Jun 2016

Number.EPSILON is not supported in Internet Explorer.