Check password strength instantly with an entropy score, estimated crack time and specific advice for making it harder to guess. Nothing is sent anywhere.
The Password Strength Checker analyses a password locally in your browser and reports an entropy-based strength score, an estimated crack time, and specific suggestions for making it harder to guess. Nothing you type is uploaded, logged or stored anywhere, which matters given that you're testing a password specifically.
Rather than a vague weak-to-strong label, it explains what makes the password vulnerable — short length, common dictionary words, predictable patterns — so the feedback is actionable. It's a straightforward way to check password security before using it on an important account, or to test how strong is my password compares to a proposed replacement.
The strength figure is calculated from character variety and length rather than a simplistic rule like just requiring one number and one symbol.
Seeing an approximate time to crack makes the abstract idea of password strength concrete and easier to reason about.
Rather than a plain score, the tool explains exactly which weaknesses — length, dictionary words, keyboard patterns — are dragging the score down.
The password is processed only in your browser and is never transmitted, logged or stored anywhere.
Short length, dictionary words, personal names and dates, keyboard runs such as qwerty, and predictable substitutions like replacing a with @ are all things attackers try first — these patterns lower the effective entropy far below what the raw character count suggests.
The analysis runs entirely client-side with nothing uploaded or logged, but as good practice it's still sensible to test a close variant rather than the exact live password for an important account.
Entropy measures how many guesses, on average, an attacker would need using a mix of dictionary and brute-force methods. Longer passwords with a genuinely random mix of character types have exponentially higher entropy than longer passwords built from predictable words.
Length matters more than complexity — a long passphrase of unrelated words is usually stronger and easier to remember than a short password packed with substituted symbols. Aim for at least 12–16 characters where the account allows it.
The analysis runs entirely in your browser — nothing is uploaded, stored or logged. Even so, testing a close variant rather than your live password is a good habit.
Short length, dictionary words, names, dates, keyboard runs like qwerty, and predictable substitutions such as replacing a with @ — attackers test all of these first.
Yes. Password Strength Checker on Klipza is completely free with no account, no subscription and no watermark on your files, and there is no daily usage limit.
Processing happens locally in your browser wherever technically possible, so your files are not uploaded to a server, stored or shared with third parties.
Yes. It is fully responsive and runs in any modern browser on Android, iPhone, iPad, Windows and macOS — nothing to install.