Math.log10()

The Math.log10() static method returns the base 10 logarithm of a number. That is

{{InteractiveExample("JavaScript Demo: Math.log10()")}}

```js interactive-example console.log(Math.log10(100000)); // Expected output: 5

console.log(Math.log10(2)); // Expected output: 0.3010299956639812

console.log(Math.log10(1)); // Expected output: 0

console.log(Math.log10(0)); // Expected output: -Infinity

## Syntax

```js-nolint
Math.log10(x)

Parameters#

• x
• : A number greater than or equal to 0.

Return value#

The base 10 logarithm of x. If x < 0, returns {{jsxref("NaN")}}.

Description#

Because log10() is a static method of Math, you always use it as Math.log10(), rather than as a method of a Math object you created (Math is not a constructor).

This function is the equivalent of Math.log(x) / Math.log(10). For log10(e), use the constant {{jsxref("Math.LOG10E")}}, which is 1 / {{jsxref("Math.LN10")}}.

Examples#

Using Math.log10()#

Math.log10(-2); // NaN
Math.log10(-0); // -Infinity
Math.log10(0); // -Infinity
Math.log10(1); // 0
Math.log10(2); // 0.3010299956639812
Math.log10(100000); // 5
Math.log10(Infinity); // Infinity

Specifications#

{{Specifications}}

Browser compatibility#

{{Compat}}

See also#

• Polyfill of Math.log10 in core-js
• es-shims polyfill of Math.log10
• {{jsxref("Math.exp()")}}
• {{jsxref("Math.log()")}}
• {{jsxref("Math.log1p()")}}
• {{jsxref("Math.log2()")}}
• {{jsxref("Math.pow()")}}