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Number.MIN_VALUE

The Number.MIN_VALUE static data property represents the smallest positive numeric value representable in JavaScript.

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Value

2-1074, or 5E-324.

Property attributes of Number.MIN_VALUE
Writable no
Enumerable no
Configurable no

Description

Number.MIN_VALUE is the smallest positive number (not the most negative number) that can be represented within float precision — in other words, the number closest to 0. The ECMAScript spec doesn't define a precise value that implementations are required to support — instead the spec says, "must be the smallest non-zero positive value that can actually be represented by the implementation". This is because small IEEE-754 floating point numbers are denormalized, but implementations are not required to support this representation, in which case Number.MIN_VALUE may be larger.

In practice, its precise value in mainstream engines like V8 (used by Chrome, Edge, Node.js), SpiderMonkey (used by Firefox), and JavaScriptCore (used by Safari) is 2-1074, or 5E-324.

Because MIN_VALUE is a static property of Number, you always use it as Number.MIN_VALUE, rather than as a property of a number value.

Examples

Using MIN_VALUE

The following code divides two numeric values. If the result is greater than or equal to MIN_VALUE, the func1 function is called; otherwise, the func2 function is called.

js
if (num1 / num2 >= Number.MIN_VALUE) {
  func1();
} else {
  func2();
}

Specifications

Browser compatibility

Desktop Mobile Server
Chrome Edge Firefox Opera Safari Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet WebView Android Deno Node.js
MIN_VALUE 1 12 1 3 1 18 4 10.1 1 1.0 4.4 1.0 0.10.0

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MIN_VALUE