File Hash Calculator
Hash files with WebCrypto.
Runs locally in your browser
Your inputs are processed locally in your browser and are not uploaded or stored by us.
A free local utility to calculate cryptographic hashes of your files.
How to Use
- Select your file(s) locally using the file picker (up to 100MB per file).
- Select the desired hash algorithm (e.g. SHA-256).
- Click the Process button to run the algorithm within your browser.
- View the resulting checksum hashes.
Privacy and Processing
All processing runs entirely in your browser. Files are hashed sequentially: each file is read fully into memory for its Web Crypto digest. Hashing is not streaming or incremental within a single file. Your selected files are processed locally and are not uploaded to our servers.