Number.MAX_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.MAX_VALUE static data property represents the maximum numeric value representable in JavaScript.
Try it
function multiply(x, y) {
if (x * y > Number.MAX_VALUE) {
return "Process as Infinity";
}
return x * y;
}
console.log(multiply(1.7976931348623157e308, 1));
// Expected output: 1.7976931348623157e+308
console.log(multiply(1.7976931348623157e308, 2));
// Expected output: "Process as Infinity"
Value
21024 - 2971, or approximately 1.7976931348623157E+308.
Property attributes of Number.MAX_VALUE | |
|---|---|
| Writable | no |
| Enumerable | no |
| Configurable | no |
Description
Values larger than MAX_VALUE are represented as Infinity and will lose their actual value.
Because MAX_VALUE is a static property of Number, you always use it as Number.MAX_VALUE, rather than as a property of a number value.
Examples
Using MAX_VALUE
The following code multiplies two numeric values. If the result is less than or equal to MAX_VALUE, the func1 function is called; otherwise, the func2 function is called.
js
if (num1 * num2 <= Number.MAX_VALUE) {
func1();
} else {
func2();
}
Specifications
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-number.max_value |
Browser compatibility
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