Password Strength Checker: Test How Strong Your Password Is | Free

A No, but our tool won't stop you from typing it. A reused password could score high on entropy yet be compromised from a previous breach. Your crack time might show centuries, but that estimate assumes nobody already knows your password. Check haveibeenpwned separately for breaches. Treat each password as unique.

A No, it doesn't. We deliberately avoid sending any data to external services like Have I Been Pwned. That connection could expose your password to a third party. Our tool only analyzes structure and entropy right in your browser. Want to check for past breaches? Do that separately, on the official HIBP site. A strong password today won't help if it's already leaked somewhere.

A Length alone isn't everything — character variety matters just as much. A 20-character lowercase password has only 26 possibilities per slot. That's about 2 × 10^28 combinations. But a 10-character password using uppercase, lowercase, numbers, and symbols gives you 94 options per character, totaling roughly 5 × 10^19 combos. Our tool calculates the actual entropy bits, and symbols win here. Your crack time drops from centuries to decades. Mix types even in long passwords for best results.

A Yes, it does. Our password checker scans against a dictionary of 10,000 common passwords, keyboard patterns like 'qwerty', and sequential numbers. For example, 'P@ssw0rd' looks complex but gets flagged immediately. The tool also catches leetspeak substitutions, so 'Tr1ckyP@ss!' won't fool it. If you see a low score despite mixed characters, your password likely contains a recognizable word or pattern. Try replacing whole words with random phrases instead.

A Not necessarily. Length boosts entropy, but a long password made of one repeated character like 'aaaaaaaaaaaaaaaa' gets a terrible score. Our checker detects repetition and penalizes it harshly. A 16-character random phrase beats a 30-character patterned string every time. For concrete numbers: 'correct horse battery staple' scores higher than 'pppppppppppppppppppppppppppp'. Think of entropy as a mix of length, variety, and unpredictability. Short and weird often beats long and predictable. Test both in our tool and watch the crack time estimates differ wildly.

A Most of the time, yes, but not always. A 20-character random string from a manager scores near-perfect. However, if the generator uses only lowercase letters, your score drops noticeably. Our tool flags that limited variety. Try it yourself: generate a 16-char password with symbols versus one without. The difference in crack time is stark. A good manager lets you pick character sets. Use uppercase, lowercase, numbers, and symbols. That combo typically yields centuries of estimated crack time.

A Absolutely not. Even though processing stays local, typing a real work password into any browser page violates most corporate security policies. IT departments log keystrokes on company devices, and browser extensions can intercept input. Use our tool with a fictional or slightly altered version instead. For example, change two characters and note the score difference. Then apply that same pattern mentally to your real password. Your employer's data deserves better than a paste into an unsanctioned form.

A Probably, but the score isn't the whole story. Banks often require 8-12 characters with mixed types, and our tool will confirm you clear that bar. A 14-character password with symbols typically shows centuries of crack time, which is plenty. But strength doesn't cover phishing, keyloggers, or a breach at the bank itself. Use a unique password, turn on two-factor authentication, and you're in good shape.

A Stop memorizing random character strings because passphrases are much easier to remember. Combine four random words like 'coffee-staple-guitar-ocean' to hit 24 characters easily. Our tool rewards this length with a maxed-out crack time score. You get top-tier security without needing a notebook.

A No, closing your browser tab wipes everything instantly. Because all calculations happen client-side in your memory, nothing ever saves to local storage or cookies. You won't find any logs or history traces left behind when you reopen the page. Type a test phrase and see for yourself. Just refresh the screen, and the input field stands completely blank again.