Generate a strong, random 10-character password in one click. 10 characters meets most site minimums — consider upgrading to 12+ for accounts you care about most. Everything runs in your browser and is never transmitted anywhere.
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A randomly generated 10-character password using all character types (uppercase, lowercase, numbers, symbols — about 95 characters per position) has roughly 9510 ≈ 5.99 × 1019 possible combinations, equating to about 66 bits of entropy. At 10 trillion guesses per second — a realistic offline GPU cracking rate — exhausting that space would take approximately 190 years. That is meaningful protection for a wide range of everyday accounts.
Ten characters sits in a useful middle ground: it far exceeds the bare minimum of 8 characters, and it clears the threshold most security researchers consider adequate for standard accounts (60+ bits). It's appropriate for accounts where you need a stronger-than-minimum credential but the site or system caps length at 10 characters, or for medium-stakes accounts where you want solid protection without the complexity of a longer credential you might need to enter manually.
Where 10 characters may fall short is for the highest-value targets: primary email accounts (which control password resets for everything else), banking and investment accounts, and especially password manager master passwords. These deserve 12 characters or more. The comparison shown in the tool above — "vs 16-char: you're ~60 million× weaker" — illustrates the scale of what additional length buys. The four extra characters in a 16-character password are trivial to store in a password manager and represent an enormous security multiplier.
Some websites specify exactly 10 characters as a required or maximum length. This is less common than 8-character or 12-character limits but does occur on legacy corporate intranets, older financial portals, and some government systems. In those cases, a randomly generated 10-character password is the best possible credential for that system — and it is much better than the human-invented alternatives most people choose under the same constraint.
A human-invented 10-character "strong" password typically exploits patterns: a recognizable word with substitutions and a number appended (Secur1ty!, Welcome2024). Attackers' rule-based crackers specifically target these patterns, reducing the effective search space from 1066 combinations to a much smaller set of common variations. A randomly generated password from crypto.getRandomValues() has no pattern and forces attackers into true brute force — using the full 66-bit search space.
If you have free choice of password length and are reaching for 10 characters out of habit rather than constraint, consider 12 characters instead. The difference is 952 ≈ 9,025 times harder to crack — a 10-character password crackable in 190 years becomes a 12-character password crackable in 1.7 million years under the same conditions. Password managers store both identically; the extra two characters cost you nothing in practice.
Use our 12-character password generator for everyday account setup, and this 10-character generator for sites that specifically require it. If a site forces you to use exactly 10 characters, get the best possible 10-character credential — which this tool provides — and enable every other security option (2FA, login alerts) that the site offers.
crypto.getRandomValues() — the browser's cryptographically secure random source. Nothing is transmitted to any server. Password history lives only in memory and disappears when you close the tab.