To confirm a download is not truncated or corrupt, either works and MD5 is faster. To confirm nobody tampered with the file, use SHA-256: MD5 collisions have been practical for years, so it is no longer a security check.

My value does not match the published one.

First make sure you are comparing the same algorithm (MD5 is 32 hex characters, SHA-256 is 64), then that the download finished. A genuine mismatch means the file was corrupted or replaced in transit — download it again, preferably from another mirror.

How is this different from the Hash tool?

The Hash tool computes SHA digests of text or a single file. This one is built for verifying files: batches, MD5 and CRC32, comparison against an expected value, exportable manifests, and streaming reads for very large files.

Are my files uploaded?

No. Every digest is computed in your browser in JavaScript; not a byte of the file leaves your machine.

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✅File MD5 / SHA-256 Checksum - Calculate and Verify Online

After downloading something big, check that it arrived intact and matches what the publisher shipped: drop the file in, paste the checksum from the download page, and a match turns green. Several files at once, and large ones are hashed while streaming instead of being loaded into memory.

Free · No sign-up · Runs in your browserLast updated: 2026-10-26

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How to use File Checksum

1Drop in one or more files and tick the algorithms you need (MD5 and SHA-256 by default)
2Click Compute and wait for the progress bar
3Paste the published checksum into the box — matches are highlighted in green

FAQ

MD5 or SHA-256?: To confirm a download is not truncated or corrupt, either works and MD5 is faster. To confirm nobody tampered with the file, use SHA-256: MD5 collisions have been practical for years, so it is no longer a security check.
My value does not match the published one.: First make sure you are comparing the same algorithm (MD5 is 32 hex characters, SHA-256 is 64), then that the download finished. A genuine mismatch means the file was corrupted or replaced in transit — download it again, preferably from another mirror.
How is this different from the Hash tool?: The Hash tool computes SHA digests of text or a single file. This one is built for verifying files: batches, MD5 and CRC32, comparison against an expected value, exportable manifests, and streaming reads for very large files.
Are my files uploaded?: No. Every digest is computed in your browser in JavaScript; not a byte of the file leaves your machine.