CRC32 Calculator
Get the CRC32 checksum of any text instantly, in both hexadecimal and decimal. Computed entirely in your browser.
How it works
- 1
Enter your text
Any text or data you want to checksum.
- 2
Read the checksum
Shown in hexadecimal and decimal.
- 3
Compare against a known value
To confirm a file or message was not corrupted.
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Frequently asked questions
No, it is only meant to catch accidental corruption, not deliberate tampering. Use SHA-256 for security.
What CRC32 checksums are for
CRC32 (Cyclic Redundancy Check) produces a short 32-bit checksum used to detect accidental corruption — it is what ZIP files, PNG images and Ethernet frames use internally to catch transmission errors.
Unlike SHA-256, CRC32 is not designed to resist deliberate tampering — it is fast and good at catching random bit errors, not secure against someone intentionally crafting a matching checksum. Use a cryptographic hash for security purposes.