How is password strength estimated?
The estimate counts the available choices for each selected word, random letter, digit and symbol. It treats words as dictionary choices, rather than assuming every letter is independently random. Capitalization and placement are not counted as extra security. The labels use a deliberately relaxed scale for memorable word-based passwords: Very weak below 10 estimated bits, Weak from 10, Fair from 18, Strong from 28, and Very strong from 40. These are this tool’s own labels, not standard security thresholds. Other websites may rate the same password lower. They do not predict cracking time or guarantee protection.
What does the strength preset change?
Fair starts at 12 characters with one uppercase letter, digit and symbol. Strong starts at 18 characters with one uppercase letter, two digits and one symbol. Very strong starts at 24 characters with two of each. Selecting a preset resets the fields and unchecks every “at least” box. Values cannot go below that preset’s minimums. These are input presets, not guaranteed strength ratings: the generated password’s actual estimate is shown separately.
Is an eight-character word password strong?
Often it is not. Familiar words are also familiar to attackers. The default length of eight is provided for compatibility; choose a longer password and a minimum strength for better protection. Use a password manager and enable multifactor authentication where available.
Can I use this with a website’s password rules?
Yes. Set the length and counts to match that website. Additional symbols come from ! @ # $ % & * + - = ?. Word separators are separate additions and also count toward total length. If the site has a different allowed-symbol list, check compatibility before using the password.