Bcrypt Hash Tool

The Bcrypt Hash Tool generates bcrypt hashes from a password and verifies whether a given password matches an existing hash, with an adjustable salt-rounds (cost) setting. Bcrypt is purpose-built for password storage: it salts automatically and is deliberately slow, which is what makes large-scale brute-force attacks impractical.

Backend developers use it to create test hashes during development, confirm that a stored hash matches a supplied password, and understand how the cost factor affects hashing time. A value of around 10 rounds is a sensible default for most applications, balancing security against the time each login takes to verify.

Hashing and verification both happen entirely in your browser, so the password you enter never reaches a server and is not stored anywhere. With no install and no account, it is a safe sandbox in which to experiment with bcrypt and confirm your authentication logic behaves the way you expect. Nothing you type is ever sent over the network, so even real credentials can be tested without any risk.