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How to compare numbers but allowing a tolerance in Excel?

doc compare numbers with tolerance 1

In Excel, we can apply the formula: =A1=B1 to return a TRUE or FALSE to identify if the two compared cells are equal, but, sometimes, we need to compare two numbers but allowing a tolerance. For example, I have the following data, column A and column B, to compare them with a plus or minus tolerance of 5, that is to say if cell A1 is more or less than cell B1 5 number, it will get a TRUE, otherwise, get a FALSE as following screenshot shown. To solve this problem, this article may help you.

Compare two numbers but allowing a tolerance with formulas


arrow blue right bubble Compare two numbers but allowing a tolerance with formulas


The following formulas can help you to return a TRUE or FALSE when you compare two numbers with a tolerance, please do as this:

1. Enter any of the following formulas into a blank cell beside your compared cells, see screenshot:

=AND(A1<=B1+5,A1>=B1-5)

=ABS(A1-B1)<=5

Note: In these formulas: A1 and B1 is the two numbers that needed to be compared, and the number 5 indicates the tolerance range of the two number, you can change them to your need.

doc compare numbers with tolerance 2

2. Then drag the fill handle down to the cells that you want to apply this formula, and it will return a TRUE if the two numbers are in a specified tolerance range, or else, FALSE is displayed, see screenshot:

doc compare numbers with tolerance 1


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  • To post as a guest, your comment is unpublished.
    Kim · 6 months ago
    I am trying to set up a formula that says if A is +5% of another number, then run a calculation. However, the above are only helping in comparison. Any ideas?
  • To post as a guest, your comment is unpublished.
    Subbu · 2 years ago
    Hi, i need a solution in excel with formula for,
    If in column value is .550 ± .030 and when i entered a value in next column if entered value is with in that limit then it should highlight in one color and if out off limit it should highlight in red color.