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A short password falls instantly, however random it looks. The table and chart below model an offline attack at 10,000,000,000 guesses per second against a fast hash — the same maths a cracking rig actually runs.
| Password pattern | Time to crack | Entropy (bits) | Verdict |
|---|---|---|---|
| 6 lowercase letters | instantly | 28.2 | Weak |
| 8 lowercase letters | 21 seconds | 37.6 | Weak |
| 8 letters + numbers | 6 hours | 47.6 | Moderate |
| 10 mixed characters | 190 years | 65.7 | Moderate |
| 12 mixed characters | 2 million years | 78.8 | Strong |
| 6-word passphrase | 701 thousand years | 77.5 | Strong |
Assumes uniform random characters and no rate limiting. Password reuse or a breach database shortcut all of the above — which is why a unique password per account matters more than length alone.
A fresh password is forged the moment this page loads.
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Type or paste a password — it is analysed only on your device.
Three principles the factory never compromises on.
Every character comes from the browser's crypto.getRandomValues() — not the predictable Math.random().
Generation and analysis run entirely in your browser. No password is ever transmitted, stored, or logged — anywhere.
Strength is measured by real entropy — pool size and length — and always shown as a clear word, not just a colour.
Practical guides written for humans, not security PhDs.
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Read guide →Hardware and software recommendations verified by our team. Prices and availability checked live on Amazon UK.
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