How to use the Excel DEC2BIN function

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])

Arguments

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.

Usage notes

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

Errors

Related functions

Excel BIN2DEC Function

The Excel BIN2DEC function converts a binary number to the decimal equivalent. The input number must contain only zeros and ones and be less than 10 characters long, otherwise the function returns the #NUM! error value.

Good links

Microsoft DEC2BIN function documentation

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