Bcrypt Checker
Validate bcrypt hash structure and inspect version and cost information.
This tool checks bcrypt format only. It does not verify a plaintext password against the hash.
| Metric | Value |
|---|
Privacy: checking runs locally in your browser. No hash values are stored or transmitted.
How it works
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
When to use this tool
This tool is designed for quick, practical tasks such as everyday calculations, data formatting, or simple conversions. It is best used when you need fast results without installing software or using complex tools.
When to use
- Quick checks or one-time calculations
- Validating or converting data before using it elsewhere
- Simple tasks that do not require advanced software
When not to use
- Critical financial, legal, or medical decisions
- Large-scale or automated processing
- Situations requiring guaranteed precision beyond basic validation
Always review results before using them in important contexts.
About this tool
This tool helps you perform quick utility operations directly in your browser. It runs entirely in your browser without sending data to a server.
You can use this tool when handling simple tasks without installing additional software. The results should be interpreted as a processed output based on your input data.
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.