TXT · Text & Data tools

CRC-32C Checksum Calculator

Calculate CRC-32C

Calculate CRC-32C from text using the Castagnoli polynomial 0x1EDC6F41. The output is an 8-character hexadecimal checksum.

Use CRC-32C only when the target system asks for CRC-32C or Castagnoli. Standard CRC-32 and CRC-32C are not interchangeable.

Profile details

This variant uses reflected input and output, initial value 0xFFFFFFFF, and final XOR 0xFFFFFFFF. Those parameters must match when comparing results across tools or protocol implementations.

Frequently Asked Questions

CRC-32C is the Castagnoli CRC-32 profile. It returns a 32-bit checksum with a different polynomial from standard CRC-32.

Paste text into the input pane. Batch mode calculates one CRC-32C value per line.

No. They use different CRC profiles, so the same input produces different values.

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