# IMLOG10 function: Description, Usage, Syntax, Examples and Explanation

## What is IMLOG10 function in Excel?

IMLOG10 function is one of Engineering functions in Microsoft Excel that returns the common logarithm (base 10) of a complex number in x + yi or x + yj text format.

## Syntax of IMLOG10 function

IMLOG10(inumber)

The IMLOG10 function syntax has the following arguments:

**Inumber:**A complex number for which you want the common logarithm.

## IMLOG10 formula explanation

- Use COMPLEX to convert real and imaginary coefficients into a complex number.
- The common logarithm of a complex number can be calculated from the natural logarithm as follows:

## Example of IMLOG10 function

Steps to follow:

1. Open a new Excel worksheet.

2. Copy data in the following table below and paste it in cell A1

Note: For formulas to show results, select them, press F2 key on your keyboard and then press Enter.

You can adjust the column widths to see all the data, if need be.

Formula |
Description |
Result |

=IMLOG10(“3+4i”) | Logarithm (base 10) of 3+4i | 0.698970004336019+0.402719196273373i |