Password Security Toolkit
Generate a strong password, check the strength of one you already have, and define the policy an entire organization follows. All run entirely in your browser.
How these fit together
Three tools for three different moments in a password's life, not a pipeline you run in order. Password Generator creates a strong, random credential for a new account using the Web Crypto API — the right tool when nothing about the password needs to be memorable. Already have a password and want to know how it actually holds up? Password Entropy Calculator estimates its entropy in bits, translates that into a realistic crack time across several attack scenarios, and checks it against common weak patterns a raw entropy number misses entirely. Zooming out from one password to the rule everyone has to follow, Password Policy Generator turns a set of choices — minimum length, rotation, MFA, breach-checking — into a policy document and checks each one live against NIST SP 800-63B, the standard that reversed a lot of older conventional wisdom about what actually makes a policy stronger.