Free Hash Generator
MD5, SHA-1, SHA-256, SHA-512.
Generate cryptographic hashes instantly in your browser. Supports MD5, SHA-1, SHA-256 and SHA-512. No accounts. No uploads. No telemetry.
Input string
————Free online hash generator — MD5, SHA-1, SHA-256, SHA-512
Paste any string and instantly generate its MD5, SHA-1, SHA-256, or SHA-512 hash. All hashing runs locally in your browser using the Web Crypto API — nothing is sent to a server.
Useful for checksums, verifying data integrity, debugging authentication flows, or quickly generating a hash during development.
Common use cases
- Generate SHA-256 hashes for API authentication signatures
- Verify MD5 checksums for file integrity checks
- Hash passwords or tokens during development and testing
- Debug HMAC or signature mismatches in API integrations
FAQ
Is my input sent to a server?
No. SHA-1, SHA-256 and SHA-512 use the browser's native Web Crypto API. MD5 runs via a pure JavaScript implementation. Nothing leaves your browser.
Is MD5 secure?
MD5 is not recommended for security-sensitive use cases. Use SHA-256 or SHA-512 for anything involving passwords or sensitive data.
What is SHA-256 used for?
SHA-256 is widely used for API authentication signatures, file integrity verification, and as part of TLS and certificate chains.