Upload a file to compute its MD5, SHA-1, SHA-256, and SHA-512 hashes. Use this to verify file integrity or compare with a published checksum. All hashing runs in your browser — your file never leaves your device. Recommended: files under 50 MB.
Computing hashes…
About File Hash
A file hash (checksum) is a fingerprint of the file's contents. The same file always produces the same hash; a single bit change changes the hash completely. Developers and publishers often publish SHA-256 or MD5 hashes so you can verify that a download wasn't corrupted or tampered with. This tool computes MD5, SHA-1, SHA-256, and SHA-512 in your browser — no upload to any server.
How to use
- Click Choose file and select a file (recommended under 50 MB).
- Hashes are computed automatically. Copy any hash to compare with a published checksum.
Frequently Asked Questions
Is my file uploaded to a server?
No. Hashing is done entirely in your browser. The file never leaves your device.
What is the maximum file size?
We recommend files under 50 MB to avoid freezing the tab. Very large files may take a long time or cause the browser to become unresponsive.
Why would I use file hash?
To verify that a downloaded file matches the expected checksum (e.g. SHA-256 on a software release page). If the hashes match, the file is unchanged.