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Hash Checker Online

Compute a hash for text or a file and compare it to an expected value. Supports MD5 plus SHA-1 / SHA-256 / SHA-384 / SHA-512, with an optional auto-detect mode based on expected hash length.

Category: Developer · URL: /tools/hash-checker-online.html
Tip: Auto works best when your expected hash has the exact hex length (32/40/64/96/128).
We ignore spaces and case when comparing.
Hashes are computed locally in your browser. Very large files may be slow due to memory limits.
Related tools: MD5 Hash Converter · JSON Formatter · XML Tools · Regex Checker · Online JSON Generator
Privacy: runs locally in your browser. No uploads, no tracking scripts.

How to use

Use this to verify integrity or confirm two inputs produce the same digest.

  1. Select an algorithm (or choose Auto if you have an expected hash).
  2. Paste text into the input, or pick a local file.
  3. Optionally paste the expected hash to compare.
  4. Click Hash & Check to compute and see whether it matches.
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Secondary intents covered: Compute a hash for pasted text, Hash a local file and get its checksum, Compare a computed hash with an expected hash to confirm integrity, Auto-detect hash algorithm from expected hash length, Copy the computed hash to clipboard, Troubleshoot mismatched hashes (encoding/whitespace/case), Verify a downloaded file against a published checksum, Choose between MD5 and SHA algorithms for different use cases, Quickly confirm two values produce the same digest

FAQ

What hash algorithms does this hash checker support?

MD5, SHA-1, SHA-256, SHA-384, and SHA-512 are supported. You can also auto-detect based on the expected hash length.

Can I verify a file checksum (hash) here?

Yes—choose a local file and compute its hash, then paste the expected checksum to compare.

Is my text or file uploaded to a server?

No. Hashing runs locally in your browser and this tool does not make network requests.

Why does my computed hash not match the expected one?

Common causes are hashing different content (extra newline/space), different encoding, or using the wrong algorithm. Also make sure the expected value is hex, not base64.

What encoding is used when hashing pasted text?

Text is hashed as UTF-8 bytes. If another tool used a different encoding, results can differ.

What does “Auto (by expected hash length)” do?

It picks the algorithm based on hex length: 32=MD5, 40=SHA-1, 64=SHA-256, 96=SHA-384, 128=SHA-512.

Is a hash the same thing as encryption?

No. Hashing is one-way (you can’t get the original back), while encryption is designed to be reversible with a key.