How to compare numbers but allowing a tolerance in Excel?

In Excel, the formula =A1=B1 returns TRUE or FALSE to indicate whether two values are exactly equal. However, there are situations where you might need to compare two numbers while allowing a tolerance. For instance, you may want to check if the difference between two numbers is within ±5. This guide explains how to compare numbers with a specified tolerance range using simple formulas.
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 are the two numbers to be compared, and the number 5 specifies the tolerance range. You can adjust these values as needed.
2. Drag the fill handle down to apply the formula to other cells. It will return TRUE if the two numbers are within the specified tolerance range; otherwise, it will return FALSE. See screenshot:
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