SHA-256 Hash Generator
Generate SHA-256 hashes using your browser's built-in Web Crypto API. Fast, accurate, and client-side only — no data is ever sent to our servers.
About SHA-256
SHA-256 (Secure Hash Algorithm 256-bit) is part of the SHA-2 family, standardized by NIST in 2001. It produces a 256-bit (64 hex character) digest and is widely used for data integrity verification, digital signatures, TLS certificates, and blockchain.
Not suitable for passwords — SHA-256 is a fast hash designed for speed, which makes it vulnerable to brute-force attacks when used for passwords. Use bcrypt instead. See what is bcrypt for a full comparison.
Common uses for SHA-256
- File integrity checks and checksums
- Digital signatures (TLS, code signing)
- Blockchain and cryptocurrency (Bitcoin uses SHA-256)
- HMAC authentication tokens