Bcrypt Hash Generator
Generate a bcrypt password hash with custom salt rounds.
Output will appear here...Higher cost = slower but more secure. Each hash uses a unique salt, so hashing the same password twice yields different output — that is expected.
About Bcrypt Hash Generator
A bcrypt hash generator takes a password and runs it through bcrypt — the deliberately slow, salted hashing algorithm designed specifically for storing passwords — producing a 60-character hash string you can save in place of the plaintext. You control the cost factor (salt rounds), the single number that sets how much work an attacker must do for every guess against a stolen hash; because the cost is logarithmic, each extra round doubles that work. Every bcrypt hash also embeds its own random salt, so two users with the same password still get different hashes and precomputed rainbow tables are useless.
This bcrypt generator runs entirely in your browser — the password is hashed locally and never sent to a server, so even real credentials are safe to test here. Paste a password, choose a cost factor (10–12 is a sensible default on current hardware), and copy the resulting `$2b$` hash. To check a password against a hash you already have, use the Bcrypt Compare tool; and when you're moving an existing user table onto bcrypt, see the guide on how to migrate password hashes without forcing a reset.
How to Use
- 1Type or paste the password you want to hash into the input field.
- 2Choose a cost factor (salt rounds) — 10 is the old default, 12 or higher is recommended on modern hardware; higher is slower and more secure.
- 3The bcrypt hash is generated instantly in your browser, starting with $2b$ and the cost factor you chose.
- 4Copy the 60-character hash and store it in place of the password. To verify a password against it later, use the Bcrypt Compare tool.
Common Use Cases
- Generating a bcrypt hash to seed a test or admin user directly in a database
- Checking how much slower a higher cost factor makes hashing on your own hardware
- Creating a sample hash to wire up and test a login/verification flow
- Producing a one-off hashed credential for a config file or environment secret
Frequently Asked Questions
What are bcrypt salt rounds?
The salt rounds, or cost factor, control how many iterations bcrypt performs. Higher rounds make each hash slower to compute, which slows brute-force attacks. The relationship is logarithmic — each extra round doubles the work — so a cost of 10-12 is a common, sensible default, with 12+ recommended on current hardware.
Why use bcrypt instead of SHA256 for passwords?
Fast hashes like SHA-256 let attackers try billions of guesses per second. Bcrypt is deliberately slow and salted, so it resists brute-force and rainbow-table attacks, making it the right choice for passwords. SHA-256 is still the right tool for checksums and signatures — just not for storing passwords.
Does bcrypt add a salt automatically?
Yes. Bcrypt generates a random 16-byte salt for every hash and stores it inside the output string, so you don't manage salts separately and two identical passwords produce different hashes. This is why a bcrypt hash is safe against precomputed rainbow tables out of the box.
What do the parts of a bcrypt hash mean?
A hash like $2b$12$... has three parts: the version identifier ($2b$), the cost factor (12), and a 53-character block holding the 22-character salt followed by the 31-character hash. The whole string is 60 characters and carries everything needed to verify a password later.
Is the bcrypt generator free and private?
Yes. It's completely free, needs no account, and runs entirely in your browser — the password you enter is hashed locally in JavaScript and never transmitted to any server, so it's safe to use with real credentials.
Is Bcrypt Hash Generator free to use?
Yes. Bcrypt Hash Generator is completely free with no sign-up, no subscription, and no usage limits. Every tool on CodeUtilityKit is free forever.
Is my data safe when I use Bcrypt Hash Generator?
Absolutely. Bcrypt Hash Generator runs entirely in your browser. Your input is processed locally with JavaScript and is never sent to, stored on, or logged by any server — so it is safe even for private or sensitive data.
Features
- Run Bcrypt Hash Generator instantly, right in your browser
- 100% private — your data never leaves your device
- Copy the result to your clipboard in one click
- Free and unlimited with no account or sign-up
- Clear, friendly error messages when something is wrong
- Works on desktop and mobile, even offline after first load