What is a Bcrypt Generator?
A Bcrypt Generator computes a bcrypt hash from a password, using a configurable cost factor specifically designed to resist brute-force attacks.
Our free Bcrypt Generator automatically embeds a random salt and lets you adjust the cost factor for your security needs.
Bcrypt was purpose-built for password storage, unlike general-purpose hash functions such as SHA-256, specifically because it's deliberately slow and includes a tunable cost factor, both features that work directly against an attacker attempting to brute-force guess passwords at scale rather than optimizing for raw computational speed the way a general hash function does.
Our Bcrypt Generator computes a bcrypt hash from your input password using your chosen cost factor. That cost factor, sometimes called rounds, controls how many times the hashing process repeats internally, expressed as a power of two, so each single increment to the cost factor doubles the actual computation time required, deliberately slowing down both legitimate verification and any brute-force attack attempt in equal measure. Bcrypt also generates a random salt automatically and embeds it directly inside the resulting hash string, so there's no need to separately generate, manage, or store a salt value yourself as an extra step.
It's worth knowing about a specific, real limitation: bcrypt silently truncates any password input beyond 72 bytes, a known constraint of the underlying Blowfish cipher it's built on, meaning an extremely long password won't add meaningful additional strength beyond that 72-byte cutoff point, since everything past it gets ignored during hashing regardless of what's actually in the password. Bcrypt remains widely supported and genuinely secure today, though current OWASP guidance now recommends Argon2id as the first choice for brand-new systems, with bcrypt remaining a solid, well-tested, and acceptable alternative rather than being considered deprecated or unsafe.
Why Use a Bcrypt Generator?
- ✅ Secure Password Storage — Use a purpose-built, brute-force-resistant algorithm
- ✅ Automatic Salting — No need to manage a separate salt value
- ✅ Adjustable Cost Factor — Tune computational difficulty to your security needs
- ✅ Widely Supported — Compatible with most authentication systems and libraries
- 🧂 Hashed Locally, Free
Features & Capabilities
- Purpose-Built for Passwords — Deliberately slow, unlike general-purpose hash functions
- Automatic Salt Embedding — No separate salt management required
- Adjustable Cost Factor — Tune the computational difficulty as needed
- Instant Generation — Get a bcrypt hash in seconds
- Free for Every Test Case — No account or rate limits
Who Uses a Bcrypt Generator?
- Developers — Implement secure password storage for authentication systems
- Security Professionals — Test and verify bcrypt implementation behavior
- Students — Learn how purpose-built password hashing works
- QA Testers — Generate test hashes for authentication system testing
- System Administrators — Verify legacy bcrypt-based authentication systems
SEO & Performance Benefits
- 🧂 Brute-Force Resistance — Deliberately slow design deters mass guessing attacks
- 🧩 Simplified Implementation — Automatic salt handling reduces implementation errors
- ⏲️ Time-Efficient — Generate a hash instantly for testing purposes
- 💻 Always Available — Works from any browser, any device
- 🎫 Free to Use — No subscription needed for standard hashing
Best Practices for Using a Bcrypt Generator
- Choose an Appropriate Cost Factor — Balance security against your server's performance
- Remember the 72-Byte Limit — Longer passwords get silently truncated
- Consider Argon2id for New Systems — Currently the top OWASP recommendation
- Never Hash Passwords With a Fast Algorithm — Bcrypt exists specifically to avoid this mistake
- Keep Cost Factor Updated — Increase it over time as hardware becomes faster