📊

CRC32 Checksum Calculator

Calculate and verify Cyclic Redundancy Check values

Output Format

CRC32 Variant

CRC32 Result

Input Length: 0
Checksum Length: 32 bits (8 hex characters)
Variant: Standard (IEEE 802.3)

Quick Examples

Empty string
hello world
123456
test
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Output Format

CRC32 Variant

CRC32 Result

File Size: N/A
Checksum Length: 32 bits (8 hex characters)
Variant: Standard (IEEE 802.3)
Calculation Time: N/A

Compare Two CRC32 Checksums

Check if two CRC32 checksums are identical

About CRC32

  • CRC32 (Cyclic Redundancy Check) is a hash function that produces a 32-bit checksum
  • Used primarily for detecting data corruption in digital transmission or storage
  • Common applications include data verification in network protocols, file integrity checks, and archive formats
  • Not cryptographically secure - designed for error detection, not confidentiality
  • Different variants use different polynomials and initial values:
  • Standard (IEEE 802.3): Uses polynomial 0xEDB88320
  • MPEG-2: Uses polynomial 0x04C11DB7 with different initialization
  • POSIX: Uses polynomial 0x04C11DB7 with different processing order