Checksum Calculator

Calculate cryptographic hashes and checksums for text or files (SHA-1, SHA-256, SHA-384, SHA-512, CRC32)

Input Type

Text Input

Checksums are used to verify data integrity. Different algorithms serve different purposes:

CRC32: Fast, simple error detection (not cryptographically secure)
SHA-1: Legacy hash (deprecated for security, but still used for git commits)
SHA-256: Current standard for most security applications
SHA-384/512: Stronger variants for high-security requirements

All calculations are performed locally in your browser - your data never leaves your device.