Password maker
Easy to read out or type by hand, and far too random for anyone to guess.
Copy it somewhere safe now. Close the page and it is gone.
How safe is it?
Technical details
- length
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- alphabet
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- guaranteed
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- possible
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- entropy
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- expected
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- randomness
- crypto.getRandomValues
Look-alike characters (1 and l, 0 and O) are left out of the alphabet on purpose. Entropy is the exact count of passwords these rules can produce, in bits: each extra bit doubles the guessing, so around 60 is enough for an ordinary account and past 90 no machine that exists can work through them. Every password is equally likely, so none is more predictable than another. Guessing times assume an attacker who has stolen the site's password file, tries a trillion (1012) guesses a second, and needs half of them on average.