Hash Generator (MD5, SHA-1, SHA-256, SHA-512)

Generate cryptographic hashes from text using the Web Crypto API. All hashing happens in your browser.

Input Text

MD5 deprecated

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SHA-1 deprecated

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SHA-256

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SHA-384

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SHA-512

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What is a Cryptographic Hash?

A hash function takes any input and produces a fixed-size output (a "digest"). Good hash functions are deterministic, fast to compute, and infeasible to reverse — making them ideal for integrity checks and checksums.

Which hash should I use?

SHA-256 — Modern standard for integrity, digital signatures, blockchain
SHA-384 / SHA-512 — Stronger variants; required by some compliance regimes
MD5 & SHA-1 — Cryptographically broken. OK for non-security checksums only

Important Security Note

For storing user passwords, never use plain SHA-256. Use a slow, salted KDF like bcrypt, scrypt, or Argon2.

FAQ

Why is MD5 deprecated?

Practical collision attacks exist for MD5 since 2004. It can still be used for non-security checksums (e.g. ETags) but never for authentication or signatures.