Password Generator
NewGenerate strong passwords or passphrases and score their strength live.
Ctrl+Enterto generate a new one
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Estimates assume an offline attack at 10 billion guesses per second. Scoring runs entirely in this browser — nothing you type is sent anywhere.
Check a password
Never stored, never sent — not even to this site's own server.
Estimates assume an offline attack at 10 billion guesses per second. Scoring runs entirely in this browser — nothing you type is sent anywhere.
How the score works
Entropy comes from length and the size of the character space. Predictable structure is then subtracted: common passwords, repeated units, character runs, low character variety and trailing years. That is why a long password can still score poorly.
What is the Password Generator?
A password generator creates credentials from cryptographically secure randomness rather than anything a person could guess or a pattern an attacker could predict. The strength checker scores a password by entropy, then subtracts for the patterns that make one weak in practice: dictionary words, repeats, keyboard runs and trailing years.
Frequently asked questions
Is it safe to check my real password on a website?
On this one, yes, because the scoring is a local calculation — the password is never sent anywhere, not even to this site's own server, and is never stored. As a general habit, though, never type a real password into a tool that cannot demonstrate that.
Which is stronger, a random password or a passphrase?
Per character a random string is stronger, but per unit of human effort a passphrase usually wins because you can make it much longer without forgetting it. Five random words carry roughly 64 bits of entropy and are far easier to type on a phone than 12 random symbols.
How long should a password be?
Sixteen characters or more for anything that matters, and longer for a passphrase. Length beats complexity: adding characters increases the search space faster than swapping an "a" for an "@", which attackers already account for.
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Password Generator is one of 6 tools in Generators on Toolkit Hub, a free collection of browser-based utilities. It requires no account and no installation. Browse all tools.