What is MD5 File Checksum?

Computes the MD5 checksum of a file entirely in your browser without uploading it.

How do I use MD5 File Checksum?

Type or paste your data into the field on this page and press the button. The result is calculated instantly in your browser — nothing is uploaded.

Is MD5 File Checksum free?

Yes, MD5 File Checksum is completely free. No signup, no downloads and no usage limits.

MD5 File Checksum

Security

Compute the MD5 digest of any file right in your browser to verify integrity. Private by design — the file is never uploaded anywhere.

Pick a file

The result is computed entirely in your browser; the file is never sent anywhere.

What is an MD5 file checksum?

An MD5 checksum is a 32-character fingerprint computed from every byte of a file. Even a tiny change produces a completely different digest, so comparing checksums is a quick way to confirm a file is exactly what it is supposed to be.

What is a checksum used for?

Verifying downloads: comparing the digest published by a software vendor with the file you received.
Detecting corruption: confirming a copy was transferred without errors.
Deduplication: spotting identical files by their digest.

Is my data safe?

Yes. The digest is computed entirely in your browser from the file bytes on your device; the file is never uploaded to any server, and the results are gone when you close the page.

Frequently Asked Questions

What is MD5 File Checksum?
Computes the MD5 checksum of a file entirely in your browser without uploading it.
How do I use MD5 File Checksum?
Type or paste your data into the field on this page and press the button. The result is calculated instantly in your browser — nothing is uploaded.
Is MD5 File Checksum free?
Yes, MD5 File Checksum is completely free. No signup, no downloads and no usage limits.