Bcrypt Hash Generator & Verifier

Generate and verify bcrypt hashes in your browser. Bcrypt is the de-facto standard for storing passwords — slow by design, with per-password salt baked into the hash. Configurable cost factor (10-14) lets you tune the speed/security tradeoff.

How to use the Bcrypt Hash Generator & Verifier

Generate: type a password, pick a cost factor (10 is the modern default; 12 is safer if you can afford the latency; 14 is fortress-grade for important systems). The hash includes the salt and cost — store it as-is. Verify: paste a hash and a candidate password; the tool reports match or mismatch.

Why bcrypt instead of SHA-256

Plain SHA-256 of a password is crackable at billions of guesses per second on modern GPUs. Bcrypt is deliberately slow — cost=10 means roughly 100ms per hash, so an attacker can try ~10 hashes per second per core rather than 10 billion. Combined with a sufficiently complex password, bcrypt makes offline cracking impractical.

Argon2id (especially Argon2id with memory-hard parameters) is the newer recommendation, but bcrypt remains widely deployed and still safe at cost 12+. For new systems, prefer Argon2id; for existing systems on bcrypt, keep it and bump the cost factor every few years as hardware speeds up.