How to Calculate a CRC Character String
CRC (Cyclic Redundancy Checks) are algorithms, essentially formulas, used to check the integrity of transmitted data. They are used to compare the transmitted data against the source. CRC algorithms are commonly used to ensure that a file was properly downloaded or that a disk was properly burned. CRC tests can also be used to ensure that a string of text characters were successfully duplicated. And if you need to run a CRC check on a string of characters, you can find several free CRC calculators online to help you check your character strings.
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Instructions
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Online CRC Calculator
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Use Lammert Bies' Online CRC Calculator to find the value of a character string -- navigate your Web browser to the site's calculator (see Resources).
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Click on the calculator's "ASCII" button, then type your character string into field above the bubble.
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Click on "Calculator CRC" button to find out the value of your character string. The calculator will display the results in byte format, along with eight checksum formats.
HashCalc
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Download a free copy of HashCalc, install the program, and then start it (see Resources).
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Select the "Text string" option from the program's "Data Format" menu box, and then type your character string into the "Data" field. The "CRC32" box should be checked by default; if it's not selected, check it.
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Click on the "Calculate" button. Your results will populate into the "CRC32" field, along with any other selected algorithm fields.
CRC32 Calculator
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Download a free copy of Dr. Hoiby's CRC32 utility to calculate the value of your character strings (see Resources).
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Right-click on the file, then select the "Extract All" option from the context menu that appears. Click "Extract" in the dialog box that follows to extract the CRC32 program file from its ZIP container.
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Launch CRC32. Type your character string into the program's text field, then click on the "Compute and Quit" button. The value of your character string will be copied to your computer's clipboard. You can view the results by pasting them into a word-processing program.
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Click on the "Start" button in your taskbar, then type "Notepad" into the Start menu's search box. Click on the "Notepad" icon when it appears in the Start menu. After Notepad launches, select "Paste" from its "File" heading to view your CRC32 results.
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