10-Character Password Generator

It is adequate today: a random 10-character password with all character types has about 65 bits of entropy, which would take an offline attacker decades to exhaust. But the margin is thinner than current guidance prefers — NIST recommends 15+ characters — so treat 10 as a floor imposed by a system, not a length to choose voluntarily.

A fully random 10-character password (~65 bits) takes an offline attacker testing 10 billion guesses per second roughly 58 years on average. An invented 10-character password falls much faster because attackers try names, dates, and common patterns first — randomness is what makes the number real.

Yes — each extra random character multiplies the search space by about 88. Two extra characters turn a crack measured in days (8 characters, ~52 bits) into one measured in decades (10 characters, ~65 bits). The same logic is why 16 characters is effectively uncrackable.

Yes, if the site accepts them. Symbols raise the per-character pool from 62 to 88, lifting a 10-character password from about 60 to 65 bits. At this length you want every bit you can get — or better, add length, which helps far more than any character-set change.

It will usually satisfy the site’s rules, but high-value accounts deserve a bigger margin. For banking, primary email, and your password manager, use 16 characters or more — those accounts are the keys to everything else, and a manager makes the extra length free.

About 65 bits with the full character set (uppercase, lowercase, numbers, symbols), about 60 bits with letters and numbers only. The generator shows the exact figure and the estimated offline crack time as you adjust the options.