File Hash Calculator - Free, No Sign-Up Required
Overview
Verifying a downloaded file's checksum confirms it arrived intact and was not modified in transit. Drop any file here and the tool computes MD5, SHA-1, SHA-256, SHA-384, and SHA-512 checksums simultaneously in your browser. Compare the SHA-256 output to the value on the software's download page to confirm the file is genuine.
How to Use This Tool
Drag a file onto the drop zone or click to browse. All five checksums appear once the browser reads the file, typically under 2 seconds for files up to 100MB. Copy any hash with the icon next to it and compare it to the published checksum. No file data is uploaded anywhere.
Ready to get started? It's free, no registration required, and your files never leave your device.
PDF Tool →Frequently Asked Questions
Which checksum algorithm should I compare against a download?
Use whatever algorithm the publisher provides. Most modern software projects publish SHA-256 checksums. If the publisher provides both MD5 and SHA-256, prefer SHA-256 since MD5 is vulnerable to collision attacks.
Why do the checksums differ from what sha256sum shows on Linux?
The most common cause is a different file. If you computed the hash on a ZIP file and the tool computed it on the extracted contents, they will not match. Hash the exact same file and the output will be identical.
Can I use this to detect if a file was corrupted mid-download?
Yes. Hash the downloaded file and compare it to the SHA-256 or MD5 value the server publishes. A mismatch means the file is incomplete or corrupted. Re-download and verify again.