Using HashCalc tool to check file integrity

How to be sure that your downloaded file is intact. The simple way is to verify file integrity using SHA-1 hash or another. You need to compare the checksum of that file to the hash of the original file. In order to do that, you will need a checksum tool. I would like to introduce you a small utility named HashCalc. The strength of this tool is to support multiple types of cryptographic hash such as MD5, MD4, SHA1, SHA256, SHA384, SHA512, RIPEMD160, PANAMA, TIGER, MD2, ADLER32, CRC32… You can get HashCalc tool here.

Using HashCalc to verify the authenticity of a file

Step 1: Open HashCalc tool and select the file you want to verify.

using hashcalc tool check file integrity 2 - Using HashCalc tool to check file integrity
using hashcalc tool check file integrity 3 - Using HashCalc tool to check file integrity

If your file is too big, this may take a while.

using hashcalc tool check file integrity 4 - Using HashCalc tool to check file integrity

Step 2: Compare to the hash of source file.

using hashcalc tool check file integrity 5 - Using HashCalc tool to check file integrity

*Note:* If any discrepancies are found, the file can’t be used because of being corrupted.

If you would have any questions or concerns, please leave your comments. I would be glad to explain in more details. Thank you so much for all your feedback and support!

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  1. Hello Guang,

    I was browsing for something which result in me landing on your blog… I found it useful, but when I try to download the “hash calc” tool it’s giving me the error that I don’t have rights.

  2. Hi Guang, I am a german Physician running a home office. I got some windows 10 licences for my iMacs. whatever went wrong I could not activate windows 10 I have tried several Licens keys. it did not work.
    I thank you very much for your explanation how to activate my windows. I am so glad it worked easily. Perfect job. Manfred

    1. Microsoft only approve KMS Server activate for PC and Laptop only.

      IMAC , hasn’t get right to use KMS Server activation method.

      Yours question should ask Microsoft why?

  3. Today I have installed MS office. I want to change the language from Chinese to English..give me suggestion to change the language..

  4. but this only conforms that the downloaded file is intact. And you told here( that this method can be used to verify if the files are original microsoft software or not. How can we know that the softwares you provided (thanks for that) does NOT contain any harmful virus, worm or malicious malwares????
    hope I will get a satisfactory reply

    1. I have install more than 10 PC, no single PC firewall or antivirus program stop the activation.

      Install Firewall and anti virus program a must. Unless you do not use internet browsing.

      1. I tried scanning hascal with virus total and it reported the .exe having “malicious.799570”. Can you check if that is a malware, virus or something?

  5. How to deactivate the MS Office 365 command prompt?
    I’m interested, because I already installed, but my cousin wants to remove it, when I uninstall and reinstall the setup of MS Office 365, the product key activated always.