Checking that a password matches a stored bcrypt hash is needed when debugging login or testing. The Verify Bcrypt Password tool checks a password against a bcrypt hash—enter password and hash, get a match/no-match result. All verification runs in your browser; your password and hash never leave your device.
Is my password sent to a server?
No. Verification runs entirely in your browser. Your password and hash never leave your device. Enter the plain-text password and the bcrypt hash; the tool returns whether they match. If the hash is invalid, the tool will indicate that the hash format is invalid—valid bcrypt hashes start with $2a$, $2b$, or $2y$. Use it to test that a password matches a stored hash during development or to debug login issues. If a correct password shows as invalid, ensure the hash is complete (no truncation) and starts with $2a$, $2b$, or $2y$, and copy-paste from the same source that produced the hash. Verification is client-side and safe; do not send production passwords over the network—use this in a trusted environment only.
Key Features
- Privacy — No. Verification runs entirely in your browser. Your password and hash never leave your device.
- Invalid hash — Tool indicates invalid format. Valid bcrypt hashes start with $2a$, $2b$, or $2y$.
- Input — Enter plain-text password and bcrypt hash. Tool returns whether they match.
- When to use — Test password vs stored hash during development or debug login.
- Correct password invalid — Ensure hash is complete (no truncation) and starts with $2a$, $2b$, or $2y$. Copy-paste from same source as hash.
- Production — Verification is client-side and safe. Do not send production passwords over network; use in trusted environment only.
How to Use the Bcrypt Verifier
- Open the Verify Bcrypt Password tool.
- Enter plain-text password and bcrypt hash. View match or no-match (and invalid hash message if applicable).
- Use the "Use tool" button on the docs page if you are reading this from the documentation.
Real Use Cases
- Debug login — User says password is correct but login fails? Verify password against stored hash. Use with Create Bcrypt Password to generate new hash if needed. Use with Scrypt Verifier, Password Generator, and Hash Generator.
- Development — Test that hashes produced by your app or Bcrypt Generator verify correctly. Use with Bcrypt Generator.
- Documentation — Show team how to verify bcrypt. Use tool as reference.
- Support — Reproduce “password not working” with stored hash (redact in shared env). Use with Bcrypt Generator.
- Migration — After migrating to bcrypt, verify sample passwords against new hashes. Use with Bcrypt Generator.
- Security — Verify in trusted environment only. Do not send production passwords over network.
Why Use the Bcrypt Verifier Instead of Alternatives?
- vs. Create Bcrypt Password — Create Bcrypt Password generates hash. This tool verifies password vs hash. Use both.
- vs. Scrypt Verifier — Scrypt Verifier verifies scrypt. This tool is for bcrypt. Use the right algorithm.
- vs. Password Generator — Password Generator generates passwords. This tool verifies against bcrypt. Use generator for new password; use this to verify.
- vs. Hash Generator — Hash Generator hashes data. This tool compares password to bcrypt hash. Use for password verification only.
Benefits for Developers
- Developers — One place to verify bcrypt during development or debugging. No server; client-side only.
Common Mistakes
- Correct password shows invalid — Ensure the hash is complete (no truncation) and starts with $2a$, $2b$, or $2y$. Copy-paste from the same source that produced the hash.
- Sending production passwords — Do not send production passwords over the network. Use this in a trusted environment only.
- Wrong hash format — Valid bcrypt starts with $2a$, $2b$, or $2y$. Other formats will be reported invalid.
- Forgetting to copy — No output to copy; result is match/no-match. Use for verification only.
Frequently Asked Questions
Is my password sent to a server?
No. Verification runs entirely in your browser. Your password and hash never leave your device.
What if the hash is invalid?
The tool will indicate that the hash format is invalid. Valid bcrypt hashes start with $2a$, $2b$, or $2y$.
Enter the plain-text password and the bcrypt hash. The tool returns whether they match.
When should I use the bcrypt verifier?
Use it to test that a password matches a stored hash during development or to debug login issues.
Why does a correct password show as invalid?
Ensure the hash is complete (no truncation) and starts with $2a$, $2b$, or $2y$. Copy-paste from the same source that produced the hash.
Can I use this for production?
Verification is client-side and safe. Do not send production passwords over the network; use this in a trusted environment only.
Verify Bcrypt Password gives you match/no-match in one place: enter password and hash, get result. No server, no account. For generating hashes use Create Bcrypt Password, for scrypt use Scrypt Verifier, for random passwords use Password Generator, and for other hashes use Hash Generator.
Use the Verify Bcrypt Password tool to verify bcrypt hashes.