What does this tool do
The Hash Generator computes cryptographic hashes from text. Enter any string and get SHA-1, SHA-256, SHA-384, and SHA-512 hashes instantly. All hashing runs in your browser—no upload, no server. Useful for checksums, data integrity, and learning how hash functions work.
How to use it
- Enter text — Type or paste the text you want to hash. Supports Unicode (UTF-8).
- View hashes — SHA-1, SHA-256, SHA-384, and SHA-512 appear simultaneously.
- Copy — Click the copy icon next to any hash to copy it to the clipboard.
- Change input — Edit the text; all hashes update in real time.
How it works
The tool uses the Web Crypto API (or a polyfill) to compute hashes. The input is encoded as UTF-8, then passed to the chosen hash algorithm. Each algorithm produces a fixed-length digest (SHA-1: 40 hex chars, SHA-256: 64 hex chars, etc.). The same input always produces the same output; a tiny change changes the hash completely.
All computation runs entirely in your browser. No data is sent to any server.
Use cases & examples
- Checksums — Verify file content or message integrity.
- Passwords — Generate password hashes for storage (use proper key derivation in production).
- APIs — Create request signatures for authentication.
- Learning — Explore how cryptographic hashes behave.
- Git — Understand how Git uses SHA-1 for object IDs.
Example
Input: hello
- SHA-1:
aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d - SHA-256:
2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824
Limitations & known constraints
- Input size — Very large inputs may slow the browser; no strict documented limit.
- SHA-1 — Considered weak for new security use; prefer SHA-256 or SHA-512 for security.
- Browser support — Requires Web Crypto API; works in all modern browsers.