Python math.log10() - Logarithm to Base 10

Python math.log10()

math.log10(x) function returns the logarithm of x to base 10.

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Syntax

The syntax to call log10() function is

math.log10(x)

where

Parameter	Required	Description
x	Yes	A numeric value. The value must be greater than 0.

If x is an invalid value, such as a negative value, then log10() raises ValueError.

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Examples

In the following program, we find the logarithm of 10000 to base 10, using log10() function of math module.

Python Program

import math

x = 10000
result = math.log10(x)
print('log10(x) :', result)

Output

log10(x) : 4.0

Logarithm of a negative number to base 10.

Python Program

import math

x = -1
result = math.log10(x)
print('log10(x) :', result)

Output

ValueError: math domain error

Logarithm of infinity to base 10.

Python Program

import math

x = math.inf
result = math.log10(x)
print('log10(x) :', result)

Output

log10(x) : inf

Logarithm of decimal value to base 10.

Python Program

import math

x = 0.001
result = math.log10(x)
print('log10(x) :', result)

Output

log10(x) : -3.0

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Summary

In this Python Examples tutorial, we learned the syntax of, and examples for math.log10() function.