# IMSUM function

This article describes the formula syntax and usage of the IMSUM function in Microsoft Excel.

## Description

Returns the sum of two or more complex numbers in x + yi or x + yj text format.

## Syntax

IMSUM(inumber1, [inumber2], ...)

The IMSUM function syntax has the following arguments:

• Inumber1, [inumber2], ...    Inumber1 is required, subsequent numbers are not. 1 to 255 complex numbers to add.

## Remarks

• Use COMPLEX to convert real and imaginary coefficients into a complex number.

• The sum of two complex numbers is: ## Example

Copy the example data in the following table, and paste it in cell A1 of a new Excel worksheet. For formulas to show results, select them, press F2, and then press Enter. If you need to, you can adjust the column widths to see all the data.

Formula

Description

Result

=IMSUM("3+4i","5-3i")

Sum of two complex numbers

8+i

### Need more help?

Expand your Office skills
Explore training
Get new features first
Join Office Insiders

×