Free Online Tool

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

Free hash generator for MD5, SHA-1, SHA-256, and SHA-512. Compute hashes from any text instantly in your browser. No data sent to any server.

What is this tool?

A cryptographic hash function converts any input into a fixed-size string of characters. SHA-256 produces a 64-character hex string regardless of input length. Hashes are one-way — you can't reverse them to find the original input.

Why use this tool?

Hashes are used for password storage, file integrity checks, digital signatures, and blockchain. This tool computes SHA-1, SHA-256, and SHA-512 using your browser's Web Crypto API — no data leaves your device.

Tips & Best Practices

  • SHA-256 is the most widely used for security
  • Compare hashes to verify file integrity
  • Never use MD5 or SHA-1 for passwords (they're broken)
  • Same input always produces the same hash

Frequently Asked Questions

Is SHA-256 secure?

Yes. As of 2026, no practical attack can reverse SHA-256 or find collisions. It's used in Bitcoin, SSL certificates, and government standards.

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