Number.MAX_VALUE

The Number.MAX_VALUE static data property represents the maximum numeric value representable in JavaScript.

{{InteractiveExample("JavaScript Demo: Number.MAX_VALUE")}} 

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.

{{js_property_attributes(0, 0, 0)}} 

Description

Values larger than MAX_VALUE are represented as {{jsxref("Infinity")}}  and will lose their actual value. As mentioned in {{jsxref("Number.EPSILON")}} , the precision of numbers depends on their magnitude. Integers can only be represented precisely up to {{jsxref("Number.MAX_SAFE_INTEGER")}} , which is 2⁵³ - 1.

Because MAX_VALUE is a static property of {{jsxref("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

{{Specifications}} 

Browser compatibility

{{Compat}} 

See also

• {{jsxref("Number.MIN_VALUE")}} 
• {{jsxref("Number.MAX_SAFE_INTEGER")}} 
• {{jsxref("Number")}}