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Bcrypt Hash Generator

Developer

Generate bcrypt password hashes with adjustable cost factor and salt rounds.

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Password
Faster (4)Balanced (10)Safer (14)

Enter a password above and generate a salted bcrypt hash you can store or compare against.

Verify Password

Uses bcryptjs, generating standard $2b$ bcrypt hashes compatible with any bcrypt implementation.

Bcrypt has been battle-tested since 1999, with mature, well-audited libraries in essentially every programming language, which makes it the conservative, safe default for a team that would rather rely on decades of scrutiny than adopt a newer algorithm early, even with Argon2 now the more modern recommendation. This tool generates bcrypt password hashes with an adjustable cost factor, where each increment doubles the computation time, and configurable salt rounds, a single straightforward tuning knob rather than the several separate parameters a newer algorithm exposes.

See more about the Bcrypt Hash Generator

Useful for generating a bcrypt hash for a codebase that already relies on bcrypt everywhere else, tuning the cost factor higher to slow down brute-force attempts without switching to a different algorithm, or hashing a password with a well-established, widely supported library rather than adopting something newer.

Key features

  • Clean interface
  • Fast processing
  • No signup required
  • Works offline

Quick answers for Bcrypt Hash Generator

What library actually generates the hash?
The real bcryptjs npm package, running client-side, producing standard $2b$ bcrypt hashes that are compatible with any other bcrypt implementation on a server or in another language.
What does the cost factor slider control?
The number of hashing rounds, from 4 (fastest) to 14 (slowest and most resistant to brute-force cracking). Bcrypt is deliberately slow, and a higher cost factor makes each guess an attacker tries more expensive.
Can I check whether a password matches an existing hash?
Yes. The Verify Password field runs bcrypt.compareSync against the hash currently shown, and reports a clear match or no-match result.