SHA-1 Online
Compute the SHA-1 digest of text or a file.
Hashing & encryption Client-side WebCrypto
Tool preview
How to use it
- 01
Choose text or file.
- 02
Provide the input.
- 03
Compute and copy the digest.
Limitations
- ! SHA-1 has known collisions and is deprecated for signatures.
- ! Large files are limited by browser memory.
FAQ
Should I use SHA-1 for git commits?
Git still uses it for legacy compatibility, but new systems should prefer SHA-256.
Is SHA-1 faster than SHA-256?
Slightly, because it processes fewer rounds per block.
Does it handle Unicode text?
Yes, text is encoded as UTF-8 before hashing.
Files never leave your device
Processing happens in your browser using the File API, WebAssembly and Web Workers. There is no upload endpoint.
Technical details
- Processing
- Client-side
- Implementation
- WebCrypto
- Category
- Hashing & encryption
- Network requests
- None while processing