FreeUtil

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text.

SHA-1

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SHA-256

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SHA-384

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SHA-512

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About Hash Functions

A cryptographic hash function converts any input into a fixed-length string of characters. The same input always produces the same hash, but even a tiny change in the input produces a completely different output. Hashes are one-way — you cannot reverse them to get the original text.

Algorithm Comparison

  • SHA-1 (160-bit) — Legacy, not recommended for security. Fine for checksums.
  • SHA-256 (256-bit) — Most widely used. Standard for certificates, blockchain, and data integrity.
  • SHA-384 (384-bit) — Truncated SHA-512. Used in TLS.
  • SHA-512 (512-bit) — Highest security. Faster than SHA-256 on 64-bit systems.