Checksum Generator — MD5, SHA-1, SHA-256 Checksums
Quick Answer: A checksum is a hash value used to verify data integrity. Generate MD5, SHA-1, or SHA-256 checksums for any text input. Compare checksums before and after transfer to confirm data was not corrupted.
FAQ
Which checksum algorithm should I use?
SHA-256 for security-critical verification. MD5 for quick non-security checks (e.g., cache invalidation). SHA-1 is deprecated for security but still used in Git.
What is the difference between a hash and a checksum?
Technically, a checksum detects accidental changes while a cryptographic hash resists intentional tampering. In practice, SHA-256 serves both purposes.