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Free Hash Tool

Generate common hashes from text or a local file: MD5, SHA-1, SHA-256, SHA-384, and SHA-512. Runs fully in your browser (no uploads).

Category: Developer · URL: /tools/free-hash-tool.html
Text input
Whitespace handling
Output
Privacy: runs locally in your browser. No uploads, no tracking scripts.

How to use

Pick an algorithm, paste text (or choose a file), then compute. Use copy buttons to paste the result into your workflow.

  1. Select Algorithm (SHA-256 is the usual default).
  2. Enter text in the box, or choose a file (file overrides text).
  3. Click Compute hash.
  4. Copy Hex or Base64.
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Secondary intents covered: Generate a SHA-256 hash for a pasted string, Compute a hash for a downloaded file to verify integrity, Compare two hashes to confirm identical content, Switch between hex and Base64 output formats, Troubleshoot why a checksum doesn't match (encoding / whitespace), Create hashes for API signatures or storage keys, Learn differences between MD5, SHA-1, and SHA-2 family

FAQ

Is this hash tool really free and offline?

Yes. Hashing runs in your browser; nothing is uploaded.

What’s the difference between MD5 and SHA-256?

MD5 is broken for collision resistance; SHA-256 is stronger and the common default for integrity checks.

Why doesn’t my hash match another site or command line?

Usually it’s different input bytes (UTF-8 vs another encoding), extra whitespace/newlines, or you hashed a file vs its displayed text.

Can I hash a file here?

Yes. Choose a local file; it overrides the text box and hashes the file bytes directly.

What output format should I use: hex or Base64?

Hex is the most common for checksums; Base64 is shorter and often used in APIs.

Is SHA-1 still safe?

Not for security-sensitive uses (collisions exist). Use SHA-256 or better for new work.

Does this tool support HMAC?

No. This tool computes plain hashes; use an HMAC-specific tool when you need a keyed signature.