MD5 is broken by collisions and is not offered by the browser's Web Crypto. Prefer SHA-256 for checksums.

Can it hash multi-GB files?

Yes, subject to your memory. Files are read locally with no upload, so there is no network limit.

Are my files or data uploaded?

No. Everything runs locally in your browser with no network upload, and is discarded when you close the page.

Do I need to sign up or pay?

No. The site is completely free, needs no account and has no usage limits.

#️⃣

#️⃣Online Hash Calculator - SHA-1/256/384/512 Checksum

Compute cryptographic digests of text or any file, showing SHA-1, SHA-256, SHA-384 and SHA-512 at once. Great for verifying file integrity or checking a download was not tampered with. It uses the browser's built-in Web Crypto API locally, so files are never uploaded.

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How to use Hash / Checksum

1Choose Text or File
2Type text, or drop the file to verify
3Copy the hash you need and compare it to the published value

FAQ

Why no MD5?: MD5 is broken by collisions and is not offered by the browser's Web Crypto. Prefer SHA-256 for checksums.
Can it hash multi-GB files?: Yes, subject to your memory. Files are read locally with no upload, so there is no network limit.
Are my files or data uploaded?: No. Everything runs locally in your browser with no network upload, and is discarded when you close the page.
Do I need to sign up or pay?: No. The site is completely free, needs no account and has no usage limits.