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Excel DELTA Function

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If you want to follow along with this tutorial, please download the example spreadsheet.

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The Excel DELTA function compares two numeric values, and checks if they are equal. If the two numbers are equal, DELTA function returns 1, if not, DELTA returns 0.

Syntax and arguments

Formula syntax

DELTA(number1, [number2])


  • Number1: Required, the first number.
  • Number2: Optional, the second number. If it is omitted, it will be assumed as zero.

Return Value

The DELTA function returns zero (0) or one (1).


Return #VALUE! error if any arguments of DELTA function are non-numeric values.


Excel 2003 and later

Usage and Examples

Example: Basic Usage

There are numbers listed in range B4:C9, now to test two numbers in each row if equal to each other, please copy or enter the formula as below:


Press Enter key and drag the autofill handle down to test all numbers in each row.

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If you just use the formula once, you also can directly type arguments in the formula:


Relative Functions:

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