Free Online Hash Generator (MD5/SHA) Tool

A hash generator produces a fixed-length fingerprint of an input string using cryptographic hash algorithms — MD5, SHA-1, SHA-256, and SHA-512 all shown side by side.

Your data is processed entirely in your browser and never sent to any server.

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How to Use This Developer Tool

  1. Paste or type text into the input area.
  2. All four hashes (MD5, SHA-1, SHA-256, SHA-512) update live in the output panel.
  3. Click the algorithm you need to copy that specific digest.

What Is a Hash Generator (MD5/SHA)?

Hashes are one-way functions: the same input always produces the same output, but you cannot recover the input from the output. They're used for file integrity checks (downloads), version stamps (Git commits use SHA-1), HMAC signatures, and password storage (with appropriate KDFs).

This generator uses the Web Crypto API for SHA-1/256/512 and an in-browser MD5 implementation for the legacy algorithm. Use SHA-256 for new code; MD5 and SHA-1 are kept for compatibility with older systems. For password hashing specifically, use a slow KDF like bcrypt or Argon2 — these general-purpose hashes are too fast to be safe for passwords.

Frequently Asked Questions

Which hash algorithm should I use?
SHA-256 for general use (checksums, integrity). MD5 and SHA-1 are broken for security—avoid for passwords. Use bcrypt/Argon2 for passwords.
What's the difference between MD5 and SHA-256?
MD5 is 128-bit, fast, but cryptographically broken. SHA-256 is 256-bit, secure, slower. Use SHA-256 for security-sensitive hashing.
Can I hash files?
Yes, upload a file to get its hash. Useful for verifying downloads, deduplication, or checksums. Same input always gives same hash.

Published by the WeGotEveryTool team. We build and test every tool in-house and update pages when the underlying spec, formula, or recommendation changes.

Reviewed: May 2026. Disclaimer: this tool is provided as-is for general informational use. For decisions with material consequences (medical, legal, financial, security) verify results against a qualified professional source.

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