Password Strength Meter Pro
Not all strong-looking passwords are strong. This meter calculates true entropy based on the character sets you use, then subtracts points for predictable patterns like sequences, keyboard runs, repeated characters, and common words — giving you a realistic score and clear advice.
This meter scores a password you already have; the Password Strength Checker does the same job with more feedback. If it scores badly, the Password Generator will fix that.
How to use the Strength Meter Pro
- 1 Enter the password to analyse.
- 2 Read the entropy estimate in bits alongside the score.
- 3 Review the individual findings — dictionary words, keyboard patterns, repeats, dates.
- 4 Use the advice to improve it, then re-check.
How to Use
Type or paste a password. Nothing is sent anywhere — the analysis runs entirely in your browser. Review the entropy, the estimated crack time, and the specific weaknesses detected.
- Accurate entropy calculation based on character pool and length
- Estimated offline crack time
- Pattern detection for sequences, repeats, and keyboard walks
- Common password and date detection
- Concrete, prioritized improvement tips
Frequently asked questions
What does the entropy figure mean?
It estimates how many bits of uncertainty an attacker faces. Around 40 bits is weak, 60 is reasonable against an offline attack, and 80 or more is strong. The estimate assumes the attacker knows your generation method, so a password built from words is scored by the word list, not by its letter count.
Why is a long passphrase better than a short complex password?
Because the search space grows exponentially with length and only linearly with the character set. A 20-character passphrase of ordinary words beats an 8-character jumble of symbols by an enormous margin, and it is far easier to remember and type on a phone.
Should I check my real password here?
The analysis runs locally and nothing is sent, so it is safe in that sense. A better habit is to check a password you are considering rather than one you already use, since the strongest option is a unique password per site held in a password manager.
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