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SHA-1 Hash Generator Online

Generate SHA-1 hash values from text. Free online SHA-1 generator.

How to use

  1. Type or paste your input text in the box above
  2. The hash updates automatically as you type
  3. Choose the algorithm from the dropdown — output updates instantly
  4. Click Copy next to any hash to copy it to your clipboard

Which algorithm to use

  • SHA-256 — current standard for cryptographic use: file integrity, digital signatures, HMAC
  • SHA-512 — larger digest, faster on 64-bit hardware; higher security margin
  • SHA-1 — deprecated for security; still used by Git for commit identifiers
  • MD5 — broken for security; only use for non-security checksums and cache keys

Don't hash passwords with SHA-256

General-purpose hash functions are designed to be fast, which makes them poor for passwords. Use bcrypt, Argon2, or scrypt for password hashing — they're deliberately slow to resist brute-force attacks.

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