What does Bcrypt Hash Generator actually do?

The bcrypt tool hashes a password with a cost factor you choose, or checks a password against an existing bcrypt string. Cost is the work factor: each step up is slower. A hash cannot be reversed. Verification only says whether that password matches that string.

What does the bcrypt cost factor control?

Cost (4–14 here) sets how expensive hashing is. Higher cost means slower hashes and stronger resistance to brute-force — pick a value your app can afford at login time.

Are passwords uploaded?

No. Hashing and verification run in your browser only.

Is this a replacement for production password storage guidance?

It is a local helper. Follow your framework’s password hashing best practices for production systems.

Bcrypt Hash Generator

Generate and verify bcrypt password hashes with adjustable cost factor (4–14). Free online — runs locally, no upload.

Generate Bcrypt Hash

Password

Cost Factor (rounds)10

Higher cost = more secure but slower. Default is 10 (≈100ms). 12 takes ~1s, 14 takes ~10s.

Bcrypt Hash

Enter a password above

Verify Password Against Hash

Hash to verify against

Bcrypt is the recommended algorithm for password storage. The salt is embedded in the hash itself (the $2a$10$ prefix encodes the version and cost factor), so you don't need to store it separately.

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Bcrypt Hash Generator

Generate Bcrypt Hash

Verify Password Against Hash