SHA-256 Hash Generator

Creates SHA-256 (64 hex chars) from text — all in your browser

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SHA-256

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What is SHA-256?

SHA-256 is part of the SHA-2 family and produces a 256-bit hash value (64 hex characters). It is today's de facto standard for digital signatures, TLS certificates, blockchain (Bitcoin) and file integrity.

Security & collisions

SHA-256 is currently considered collision-resistant: no practical collisions are known. With 2^128 expected operations for a collision (birthday attack), the effort is far beyond today's computational capabilities.

Use cases

  • Verify file integrity (checksum)
  • Digital signatures and certificates
  • HMAC (message authentication)
  • Deterministic API keys and cache keys