About

MD5 Calculator is a free, simple and easy-to-use MD5 hash value calculation tool, it can quickly calculate, export, import, copy and check MD5 checksum.

Download

Feel free to download and use it, it is a completely freeware. Program supports Windows 8/7/Vista/XP.

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Screenshot

small screenshot

Qucik Start

The use of MD5 Calculator is very simple to use. Click "Add File" or "Add Folder" button in the toolbar, users can add multiple files to file list, then click "Calculate" button, the MD5 checksum of each file will be quickly calculated.

On the panel below file list, this calculator will display the current file's MD5 checksum, users can click on "Copy" button to copy MD5 checksum to the System Clipboard.

Check MD5

For comparing two MD5 checksums, users should enter an existing MD5 checksum, or press "Paste" button to paste from the System Clipboard, then press "Compare" button, software will immediately compare two MD5 checksums.

Export and Import

There are two important functions in MD5 Calculator: Export and Import. Using the Export function, users can save all current file records and calculated results to a standalone file, the output file's extension is *. md5, it is a kind of CSV text format.

For the Import function, firstly, users should select a previously exported file, this calculator will read all records in the file, then users can press "Calculate" button on the toolbar to recalculate all MD5 checksums. If some file records calculation results are not same with the previous results, that file records will be marked with a red color, indicating that files have been modified. In addition, if some files do not exist, this calculator will display a message.

If users need to monitor changes of many files, such as file backup, the Export and Import features will be particularly useful, it be able to promptly tell users which file has been modified or deleted.

MD5 Algorithm

The MD5 (Message Digest number 5) algorithm is a high reliability of the algorithm, the same content must generate the same checksum and different content must generate a different checksum.




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