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. As mentioned in Number.EPSILON, the precision of numbers depends on their magnitude. Integers can only be represented precisely up to Number.MAX_SAFE_INTEGER, which is 253 - 1.
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.
if (num1 * num2 <= Number.MAX_VALUE) {
func1();
} else {
func2();
}
Specifications
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-number.max_value |