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How to compare numbers but allowing a tolerance in Excel?

Author: Xiaoyang Last Modified: 2024-11-26
A screenshot showing a comparison of two columns of numbers in Excel with a tolerance applied

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


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 are the two numbers to be compared, and the number 5 specifies the tolerance range. You can adjust these values as needed.

A screenshot of formulas used to compare numbers with a tolerance in Excel

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:

A screenshot showing a comparison of two columns of numbers in Excel with a tolerance applied

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