bcrypt Hash Validator
Paste a bcrypt hash to check whether it is valid — complete with the reason if it is invalid and a component breakdown if it is valid. Everything is processed on your device.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
$2b$12$R9h/cIPz0gi.URNNX3kh2O…
Example Output
✓ VALID — cost 12 (2^12 iterations)
How to Use
- 1Paste the a bcrypt hash you want to check into the input box.
- 2If the tool offers extra options (e.g. dialect, flags, or variant), set them as needed.
- 3Click Validate (or press Ctrl+Enter).
- 4Read the result badge — VALID, INVALID, or VALID with a warning — along with the details and the list of issues, if any.
About bcrypt Hash Validator
bcrypt Hash Validator checks the structure of a bcrypt password hash: the version prefix ($2a$/$2b$/$2x$/$2y$), a two-digit cost (4–31), and 53 salt+hash characters. It also warns if the cost is below 10 (considered weak for modern passwords).
Useful for confirming a value in a database is really a bcrypt hash and uses an adequate cost.
FAQ
Is my data sent to a server?
No. All validation runs in your browser with JavaScript. Nothing is uploaded, logged, or stored on our servers — safe for sensitive data.
How is this validator different from a parser or formatter?
A validator answers one question: is this input correct/valid? It returns a valid/invalid badge with the reason. A parser breaks input into its components, and a formatter tidies its layout. Use a validator when you just need to confirm something is sound before using it.