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Hash Generator Online Free — PrivaTools

TL;DR: Paste text or upload a file and copy MD5, SHA-1, SHA-256, and SHA-512 hashes — all computed locally in your browser.

Generate cryptographic hashes online for free — compute MD5, SHA-1, SHA-256, SHA-512, and more from text or files. Verify file integrity instantly. 100% private.

Hash Generator is one of 179+ free file utilities on PrivaTools. The entire stack is open source under the MIT license, so the privacy guarantees can be audited end-to-end. You can also run all 179 tools on your own infrastructure with one docker compose command.

How to Use Hash Generator

  1. Type or paste your input — Or upload a file. Files are read into the browser via FileReader.
  2. Choose hash algorithm — MD5, SHA-1, SHA-256, SHA-384, SHA-512. SHA-256 is the modern recommendation.
  3. Copy the hex digest — Runs entirely in your browser using the Web Crypto API. Input never leaves your machine.

Frequently Asked Questions

Is MD5 safe to use?

For non-security purposes (file integrity, deduplication): yes. For security (passwords, signatures): no — MD5 is broken. Use SHA-256 or SHA-512.

Why are file hashes useful?

Verifying file integrity after download, deduplication, change detection, content-addressed storage.

Is the hash calculation done in the browser?

Yes — Web Crypto API runs the hash in your browser. Files are not uploaded.

Last reviewed 2026-01-25 by the PrivaTools maintainers. Source code on (MIT-licensed, self-hostable).

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