Summary

The Excel DEC2BIN function converts a decimal number to its binary equivalent.

Purpose
Converts a decimal number to binary
Return value
Binary number
Syntax
=DEC2BIN(number, [places])
  • number - The decimal number you want to convert to binary.
  • places - [optional] Pads the resulting binary number with zeros up to the specified number of digits. If omitted returns the least number of characters required to represent the number.

Using the DEC2BIN function

The input must be a valid number within the range [ -512, 511 ].

Errors

DEC2BIN error examples

Dave Bruns Profile Picture

AuthorMicrosoft Most Valuable Professional Award

Dave Bruns

Hi - I'm Dave Bruns, and I run Exceljet with my wife, Lisa. Our goal is to help you work faster in Excel. We create short videos, and clear examples of formulas, functions, pivot tables, conditional formatting, and charts.