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Bcrypt Hash Generator & Verifier

Generate secure bcrypt password hashes with configurable salt rounds, or verify a plain-text password against an existing hash. Everything runs in your browser · no server, no tracking.

Developer Tools Runs locally No data sent
Bcrypt Password Hash Security Crypto client-side only
Salt rounds:
~100ms
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Bcrypt is a password hashing function designed to be slow. Higher salt rounds = stronger security but longer computation time. Never store plain-text passwords —always store the hash. Everything runs in your browser, no data sent.

What is Bcrypt Hash Generator / Verifier?

This tool creates bcrypt password hashes and checks whether a plaintext input matches an existing bcrypt string. It is useful for login flow testing, password migration checks, and explaining why bcrypt is better suited to passwords than fast hash algorithms like MD5 or SHA-256.

How to Use Bcrypt Hash Generator / Verifier

  1. Enter the password you want to hash or verify.
  2. Choose the cost factor if you are generating a new bcrypt hash.
  3. Generate the hash or paste an existing bcrypt string to verify against it.
  4. Copy the resulting hash or review the match result.

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Understand Bcrypt Hash Generator / Verifier ▾
Example
Input Password: mySecret123 at cost 10
Output Hash: $2a$10$N9qo8uLOickgx2ZMRZoMyeIjZAgcfl7p92ldGxad68LJZdL17lhWy
Common Use Cases
  • Generate bcrypt hashes for authentication demos and test fixtures
  • Verify whether a plaintext password matches an existing bcrypt hash
  • Compare the effect of different cost factors on browser-side hashing speed
  • Teach the difference between password hashing and general-purpose hashing
Why Use This Tool
  • Good for authentication demos, fixtures, and password migration checks.
  • Makes bcrypt cost factors and verification behavior easier to understand.
  • Runs locally so plaintext passwords are not uploaded during testing.
Frequently Asked Questions
Is this safe to use with real passwords?

This tool runs entirely in your browser, and nothing is transmitted. Still, avoid testing production credentials in any online tool as a precaution.

What is the $2a$ prefix?

It is the bcrypt version identifier. $2a$, $2b$, and $2y$ are all valid bcrypt variants; $2b$ is the current standard.

What does Bcrypt Hash Generator & Verifier Online - Secure Password Hashing Free do?

Bcrypt Hash Generator & Verifier Online - Secure Password Hashing Free runs entirely in your browser and helps you complete this task without uploading data to a server.

Is Bcrypt Hash Generator & Verifier Online - Secure Password Hashing Free free to use?

Yes. This tool is free to use and does not require sign-up.