Q: Error in Microsoft Calculator.

There is an error in Microsoft Calculator. Follow the following steps to find the error.

1. Start the Calculator

2. Write 4 on calculator

3. Take its sqrt   it will show 2 (the right answer

4. subtract 2 from the 2 result. 

5. it will show  -8.1648465955514287168521180122928e-39  instead of showing 0 (zero)

this error is in all versions of windows in calculator application.


i request microsoft to remove this bug from the calculator.

Ali Imran

Sr. Software Engineer,

Softsolutions, Pakistan. 


*** Email address is removed for privacy ***



Hello imrankasuri,

If you believe you have a product bug, you can report it at the following website:



Microsoft Answers Support Engineer
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Question Info

Views: 10,714 Last updated: July 10, 2018 Applies to: