Bcrypt Hash & Verify
Generate and check bcrypt hashes locally — passwords never leave your browser.
Hash a password
Verify a password
Bcrypt is intentionally slow. Each step up in cost roughly doubles the time. 10–12 is typical for web logins; 14+ for very high security.
About this tool
Generate bcrypt password hashes at any cost factor, or verify a plaintext password against an existing hash. Everything runs locally - passwords never leave your device.
Features
- Cost factor 4-14
- Generate and verify in one tool
- 100% in-browser via bcryptjs
- Copy hashes with one click
How to use it
- Type a password and pick a cost.
- Click Generate hash.
- To verify, paste a hash and a candidate password.
🔒 100% private
Everything happens inside your browser using JavaScript and WebAssembly. Your files are never uploaded to a server, never stored, and never seen by us.
Frequently asked questions
What cost should I use?
10-12 is typical for web logins. Higher = slower = more secure but worse UX.
Bcrypt vs Argon2?
Argon2 is the modern winner of the password hashing competition; bcrypt is older but still safe and widely supported.