CRC32 Checksum Calculator
Calculate and verify Cyclic Redundancy Check values
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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(Max file size: 500MB)
(Max file size: 500MB)
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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