Hash Generator
Local & private — compute SHA-1 / SHA-256 / SHA-384 / SHA-512 for text or files. Hex, Base64 & Base64URL.
Privacy-first • Local processing
Bits: 256 • Length (hex): 64
About this hash generator
This free hash calculator uses the browser’s WebCrypto to compute secure checksums for text or files. Choose SHA-1, SHA-256, SHA-384 or SHA-512 and copy the result in Hex, Base64 or Base64URL. Everything runs locally—nothing is uploaded.
How to use
- Select an algorithm (SHA-256 recommended for general use).
- Type/paste text or switch to File to drag & drop a file.
- Copy the output (Hex, Base64, Base64URL) or Compare checksum to verify integrity.
- Toggle Uppercase and Auto-hash for convenient formatting and live results.
Notes & tips
- SHA-1 is deprecated for security-critical uses; prefer SHA-256 or higher.
- Large files are supported (browser memory applies). Progress is shown while reading.
- For HMAC or MD5 needs, consider our upcoming advanced mode.
Last updated: October 20, 2025