Bcrypt Checker
Validate bcrypt hash structure and inspect version and cost information.
Bcrypt Checker tool
This tool checks bcrypt format only. It does not verify a plaintext password against the hash.
Result will appear here.
| Metric | Value |
|---|
Privacy: checking runs locally in your browser. No hash values are stored or transmitted.
Paste a bcrypt hash and run the checker. The tool validates the general pattern and extracts version and cost if the string is well-formed.
Examples
- $2a$... → older/common bcrypt prefix
- $2b$... → common modern bcrypt prefix
- Cost 10 → work factor of 10 rounds
FAQ
- What does this bcrypt checker validate?
It checks whether the provided string matches the expected bcrypt hash format and extracts the version and cost factor when possible.
- Does it verify a password against the hash?
No. This page checks bcrypt hash structure only. It does not perform password verification.
- What bcrypt prefixes are common?
Common bcrypt prefixes include $2a$, $2b$, and $2y$.
- Are hashes stored?
No. Everything runs locally in your browser.