CRC32 & Adler32 Calculator
Calculate CRC32 and Adler32 checksums of UTF-8 text.
Processing stays in your browser. Checks text bytes, including newlines. These checksums detect accidental changes; they do not authenticate content.
How to use the crc32 & adler32 calculator
Calculate CRC32 and Adler32 checksums of UTF-8 text. Complete the text fields above, or upload a UTF-8 text file for text. Choose Run tool, review the output, then copy or download the result.
Example
CRC32 of 123456789 is cbf43926.
Good to know
Checks text bytes, including newlines. These checksums detect accidental changes; they do not authenticate content.