Hash files privately in your browser
Cryptographic hash calculation (MD5, SHA-256, SHA-512, CRC32) that runs entirely offline. Your files never leave your device.
Drop a file or click to browse
Any file type up to 500 MB · Never uploaded
Computed Hashes
Frequently asked questions
Yes — NourHash runs 100% inside your browser. All hash calculations and streaming are handled locally in your browser memory (RAM). You can disconnect your internet and it will still work perfectly.
Thanks to incremental chunked RAM streaming (4MB slices), NourHash can process files from 500 MB up to 10 GB+ with constant low memory usage (~4MB RAM) and zero browser freezing.
NourHash includes standard cryptographic implementations of MD5, SHA-256, SHA-1, SHA-512, SHA-384, and CRC32 compliant with NIST FIPS PUB 180-4 specifications.
Never. Zero data leaves your device. No telemetry, no logs, and no analytics. Everything happens exclusively inside your local browser runtime memory.
Your selected language, theme, and algorithms are saved locally in your browser storage. If you enable local history, your computed checksum records will remain accessible across page refreshes.