Bcrypt Generator & Verifier
Hash passwords with bcrypt and verify hashes — all client-side, nothing leaves your browser
About Bcrypt
Bcrypt is the industry-standard password-hashing algorithm. Unlike fast hashing (MD5, SHA-256), bcrypt is deliberately slow: the cost factor (rounds) controls how many iterations are performed, making brute-force attacks computationally expensive. This tool generates bcrypt hashes and verifies passwords against existing hashes — all client-side in your browser, so your passwords never leave your device.
Examples
Hashing a password at cost factor 12
password: "MyS3cr3tP@ss"
rounds: 12
hash: $2b$12$LQv3c1yqBWVHxkd0LHAkCOYz6TtxMQJqhN8/LewdBPj/hq3H8G2mOA cost factor of 12 is the current production recommendation — it takes ~300 ms on modern hardware, which is fast enough for login flows but slow enough to deter offline cracking.
Verifying a password against a stored hash
password: "MyS3cr3tP@ss"
hash: $2b$12$LQv3c1yqBWVHxkd0LHAkCOYz6TtxMQJqhN8/LewdBPj/hq3H8G2mO
result: ✓ Matchbcrypt.compare() re-hashes the input with the salt embedded in the stored hash, then compares. A wrong password produces ✗ No match — no need to store the original password anywhere.
About this tool
Hash passwords with bcrypt and verify hashes — choose your cost factor (rounds 4–15), get a secure hash instantly, and check whether a password matches a hash. Runs entirely in your browser. Bcrypt Generator & Verifier runs in the browser on DevTools. There is no signup, and your input stays on this device unless the tool explicitly performs a live network lookup.
What this tool does not do
- Bcrypt Generator & Verifier is a free in-browser utility, not a hosted API. It does not keep server-side history and is not a substitute for production verification in your own stack.
How do I use this tool?
How do I use Bcrypt Generator & Verifier?
Open Bcrypt Generator & Verifier, enter or paste your input, and copy the result. The page works without an account.
Related guides
Hash Generators Explained: MD5 vs SHA-256 vs BCrypt
What cryptographic hash functions do, which algorithms are still safe, and which to pick for checksums, fingerprints, or passwords — MD5, SHA-1, SHA-256, SHA-512, and BCrypt compared.
Encryption Tools Explained: AES vs BCrypt vs HMAC
Three cryptographic primitives developers constantly confuse — reversible encryption (AES), password hashing (BCrypt), and message signing (HMAC). What each one is for, and how to pick correctly.
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