π This article includes 1 downloadable practice file β
In this article
DELTA returns 1 if two numbers are equal and 0 otherwise β easy to SUM for a count of matches.
Syntax
=DELTA(number1, [number2])| Argument | What it means |
|---|---|
number2 |
Default 0. |
Examples
Example 1
=SUMPRODUCT(--(B2:B100=C2:C100))The modern way; DELTA(B2,C2) filled down does the same row by row.
DELTA in practice
Where you will use it
- Check if two readings match exactly (1/0)
- Count exact matches with SUM(DELTA(...))
- Quick test flags
Worked example
| A | B | Formula | Result |
|---|---|---|---|
| 5 | 5 | =DELTA(A2,B2) | 1 |
| 5 | 4.99 | =DELTA(A3,B3) | 0 |
| 0 | 0 | =DELTA(A4,B4) | 1 |
Results calculated in Excel.
Mistakes people make
| Mistake | What to do instead |
|---|---|
| Text values | DELTA is for numbers only; use EXACT for text |
| Tiny floating differences | ROUND both values first |
Related functions
π Part of the free Excel course: Beginner β Expert Β· Try it in the Formula Lab or ask the AI Helper.
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π Practice files for this article
- πPractice workbook: Engineering & conversion15 tasks on realistic sales data β type your formula, the Check column turns green when it is right. Answers sheet included.β¬ XLSX Β· 34 KB
Free to use for learning. Files with macros (.bas) are plain text β import them with Alt+F11 β File β Import File, and always test on a copy.
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