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Online Hash Generator

Generate common hashes from any text right in your browser. Choose an algorithm (MD5/SHA family), pick hex or base64 output, and copy the result. This tool runs locally (no requests sent).

Category: Developer · URL: /tools/online-hash-generator.html
Privacy: runs locally in your browser. No uploads, no tracking scripts.

How to use

How to generate a hash

  1. Paste or type your text into the input box.
  2. Select the hash algorithm (MD5, SHA-1, SHA-256, SHA-384, or SHA-512).
  3. Choose output format (hex or base64) and optional input normalization.
  4. Click Generate hash, then Copy if needed.

Tip: If your hash doesn’t match another system, try toggling Trim and Normalize newlines—hidden whitespace is a common cause.

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Secondary intents covered: Generate a SHA-256 (or other) digest for a pasted string, Quickly create a checksum to compare against an expected value, Convert text into a hex or base64 hash for APIs/logging, Normalize input (trim/newlines) to match a server-side hash, Copy a digest safely for use in scripts or configs, Run known-vector self-tests to confirm the tool is working, Understand the difference between hashing and encryption, Pick the right algorithm (MD5 vs SHA-256) for a task

FAQ

Is hashing the same as encryption?

No—hashing is one-way (you can verify matches, but you can’t reliably “decrypt” a hash back to the original text).

Which algorithm should I use?

Use SHA-256 (or stronger) for modern integrity checks; avoid MD5/SHA-1 for security-sensitive uses due to collision risks.

Why doesn’t my hash match another tool?

Most mismatches are from hidden whitespace or newline differences; try toggling Trim and Normalize newlines to match the other system’s exact input bytes.

Does this tool upload my text anywhere?

No—hashing runs locally in your browser and the JavaScript does not make network requests.

Can I hash very large text?

Yes, but extremely large inputs can be slow or memory-heavy; for huge files, use a dedicated file-hash tool that streams data.

What output formats are supported?

Hex and base64; hex can be lower or uppercase.

How do I verify a hash?

Generate a hash from your input and compare it to the expected digest; exact input bytes must match for the digest to match.