## Highlight closest number

This post demonstrates how to highlight records with the closest value to a criterion, you can also choose to highlight the second closest value (or more).

You can also extract the number using the formula described in this article: Find closest value, perhaps you are also interested in how to find the numbers in a total closest to a given sum.

### Conditional formatting formula

This formula won't work in Excel 2010 and later Excel versions, simply create a named range containing the formula above. Then use that name as the conditional formatting formula, download the file later in this article if you need to see exactly how I did it.

### How to apply conditional formatting formula

Make sure you adjust cell references to your excel sheet.

- Select cells B6:D10
- Click "Home" tab
- Click "Conditional Formatting" button
- Click "New Rule.."
- Click "Use a formula to determine which cells to format"
- Type
*=OR(ABS($C6-$C$2)=SMALL(ABS($C$6:$C$10-$C$2), ROW($A$1:INDEX($A:$A, $C$3))))*in "Format values where this formula is TRUE" window.

(*The formula displayed in the image above is not used in this article*) - Click "Format.." button
- Click "Fill" tab
- Select a color for highlighting cells.
- Click "Ok"
- Click "Ok"
- Click "Ok"

### How the conditional formatting formula works in cell C6

=OR(ABS($C6-$C$2)=SMALL(ABS($C$6:$C$10-$C$2), ROW($A$1:INDEX($A:$A, $C$3))))

*Step 1 - Calculate age differences*

=OR(ABS($C6-$C$2)=SMALL(**ABS($C$6:$C$10-$C$2), **ROW($A$1:INDEX($A:$A, $C$3))))

ABS(number) returns the absolute value of a number, a number without its sign.

ABS($C$6:$C$10-$C$2)

becomes

ABS({25;46;33;26;47}-30)

becomes

ABS({-5;16;3;-4;17})

and returns {5;16;3;4;17}

**Step 2 - Create an array with the same size as chosen records to highlight in cell C3.**

=OR(ABS($C6-$C$2)=SMALL(ABS($C$6:$C$10-$C$2),**ROW($A$1:INDEX($A:$A,$C$3)))**)

ROW($A$1:INDEX($A:$A,$C$3)))

becomes

ROW($A$1:INDEX($A:$A,2)))

becomes

ROW($A$1:$A$2)

and returns {1;2}

*Step 3 - Return the two smallest numbers in array*

=OR(ABS($C6-$C$2)=**SMALL(ABS($C$6:$C$10-$C$2),ROW($A$1:INDEX($A:$A,$C$3)))**)

SMALL(array,k) returns the k-th smallest number in this data set.

SMALL(ABS($C$6:$C$10-$C$2),ROW($A$1:INDEX($A:$A,$C$3)))

becomes

SMALL({5;16;3;4;17};{1;2})

and returns {3;4}

*Step 4 - Is cell value in C6 equal to any number in array?*

=OR(ABS($C6-$C$2)=SMALL(ABS($C$6:$C$10-$C$2),ROW($A$1:INDEX($A:$A,$C$3))))

becomes

OR(logical1, logical2, ...) checks whether any of the arguments are TRUE, and returns TRUE or FALSE. Returns FALSE if only all arguments are FALSE.

$C6 is a relative AND absolute cell reference.

=OR(ABS($C6-$C$2)={3;4})

becomes

=OR(ABS(25-30)={3;4})

becomes

=OR(ABS(-5)={3;4})

becomes

=OR(5={3;4})

becomes

=OR({5=3,5=4})

becomes

=OR({FALSE,FALSE})

and returns FALSE. Row 6 is not highlighted.

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### 10 Responses to “Highlight closest number”

### Leave a Reply to Lyon

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I duplicated the spreadsheet but the formula did not work for me on Excel 2007. It says there's an error. Could you check and explain? Thx.

Lyon,

You probably have to adjust cell references in conditional formatting formula to your spreadsheet.

As I mentioned, I recreate the sample spreadsheet and copy paste the formula. But Excel 2007 says there's an error in the formula. Something is not right.

Lyon,

You are right, I found errors. I have corrected them.

Thanks for pointing them out.

It's now working! Great! Thanks a lot for your quick response.

Absoultely great

only small problem

when I enter value of 40 in search value in example given

it highlights 3 values (wendy also) I accepted it to highlight

only richard & sarah

I used this formula, however, I received errors. I see this post is quite old. is there an updated formula for excel 2010?

kris

You are right, it is not working for excel 2010.

I created a named range with the same formula and used that named range in a CF formula.

Please can you elaborate as to how to get this done in excel 2013.

Ranjan

See my answer to kris above, it should work in excel 2013 also?