File Hash (SHA-1, SHA-256, SHA-512)
Drag any file to compute SHA-1, SHA-256, SHA-512 — 100% in your browser.
Drop a file here, or click to select
About File Hash (SHA-1, SHA-256, SHA-512)
The File Hash tool computes cryptographic checksums for a file. Drag a file onto the page or select it, and the tool calculates its SHA-1, SHA-256, and SHA-512 digests, each shown as a hex string you can copy.
Hashing happens entirely in your browser using the built-in Web Crypto API, so the file is read locally and never uploaded. This makes it practical for verifying a download against a published checksum or confirming that two copies of a file are identical.
Frequently asked questions
- Is my file uploaded anywhere?
- No. The file is read and hashed in your browser, so its contents never leave your device.
- Which hash should I use to verify a download?
- Use the algorithm the publisher provided; SHA-256 is the most common, while SHA-1 is older and weaker.
- Why do the same files produce the same hash?
- A hash is a deterministic function of the file's bytes, so identical files always yield identical digests.