Number.MIN_VALUE

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

Try it

function divide(x, y) {
  if (x / y < Number.MIN_VALUE) {
    return "Process as 0";
  }
  return x / y;
}

console.log(divide(5e-324, 1));
// Expected output: 5e-324

console.log(divide(5e-324, 2));
// Expected output: "Process as 0"

Value

2-1074, or 5E-324.

Property attributes of Number.MIN_VALUE
Writableno
Enumerableno
Configurableno

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

Specification
ECMAScript® 2025 Language Specification
# sec-number.min_value

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
MIN_VALUE

Legend

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Full support
Full support

See also