Best Free Hash Generators Online 2026 — MD5, SHA-256, SHA-512
Need to hash a password, verify file integrity, or generate checksums? These tools do it instantly.
1. spunk.codes Hash Generator
Our free tool generates SHA-1, SHA-256, and SHA-512 hashes using the Web Crypto API — the same technology banks use. No data sent to servers.
When to Use Each Hash
- MD5: File checksums only (NOT for passwords — broken for crypto)
- SHA-1: Legacy systems (deprecated for security)
- SHA-256: Best general-purpose hash. Used by Bitcoin.
- SHA-512: Maximum security. Longer output.