Private by design
Text, hexadecimal input, and selected files are processed locally in your browser. Calculation input is not uploaded to a CRC calculation server.
About CRC Calculator
CRC Calculator is a browser-based toolkit for calculating cyclic redundancy checks, generating lookup tables, producing implementation code, and understanding CRC parameters.
Product principles
Built for verification
Algorithm pages expose the complete parameter set, standard check value, residue, aliases, and related calculators so results can be reproduced and compared.
Developer tools
Use the calculator, lookup table generator, code generator, algorithm identifier, and patch finder from one consistent interface.
Growing reference library
The long-term goal is a broad, validated CRC catalog covering commonly used and specialist algorithms from small CRC widths through CRC-64.
Explore CRC Calc
Start with a calculation, browse published models, or review the parameter reference.