Check if your password is weak or commonly used
A weak password checker is a security tool that analyzes passwords to determine if they're vulnerable to hacking attempts or appear in databases of commonly used, compromised, or easily guessable passwords. Our weak password checker compares your password against a comprehensive database of over 1,000 known weak passwords, including common words, simple patterns, keyboard sequences, and passwords from major data breaches. Beyond database comparison, the tool also evaluates several security criteria including password length, character diversity (uppercase, lowercase, numbers, symbols), and overall complexity. The checker provides instant feedback about your password's strength, warning you if it's easily crackable or recommending improvements to enhance security. All password checking happens locally in your browser using JavaScript, meaning your actual password never leaves your device or gets transmitted to any server. This ensures complete privacy while still providing valuable security insights. The tool is designed to help users understand what makes a password weak and guide them toward creating stronger, more secure credentials for their online accounts.
Checking your passwords for weakness is a critical security practice that can prevent account compromises and protect your personal information. Many people unknowingly use weak passwords that have appeared in data breaches or are easily guessable by automated hacking tools. Cybercriminals maintain massive databases of compromised passwords and use sophisticated algorithms to crack accounts, often succeeding within minutes for weak passwords. By checking your passwords, you can identify vulnerabilities before hackers exploit them. The process helps you understand what constitutes a strong password and educates you about security best practices. Regular password checking is especially important for critical accounts like email, banking, healthcare portals, and work-related services where a breach could have serious consequences. It's also valuable when you're updating old accounts that might still use passwords created years ago when security standards were less stringent. Even passwords you created with good intentions might be weak by today's standards or may have appeared in breaches of other services. Proactive password checking is a simple yet effective way to maintain your digital security and peace of mind.
Understanding common weak password patterns helps you avoid creating vulnerable credentials. Dictionary words rank among the weakest passwords because hackers use dictionary attacks that try every word in the language. Simple numeric sequences like "123456", "111111", or "12345678" remain shockingly common despite being the first combinations hackers try. Keyboard patterns such as "qwerty", "asdfgh", or "qwertyuiop" are equally weak since they're obvious and easy to type. Personal information including names, birthdays, phone numbers, or addresses should never be used as they can be discovered through social media or public records. Common substitutions like replacing "a" with "@" or "o" with "0" in dictionary words (e.g., "p@ssw0rd") provide minimal additional security as hackers account for these predictable variations. Default passwords that come with devices or software like "admin", "password", or "user" must be changed immediately. Passwords related to the service name ("facebook123", "gmail2024") are targeted first by hackers. Short passwords under 8 characters are weak regardless of complexity due to limited possible combinations. Reused passwords across multiple accounts create vulnerability cascades where one breach compromises all your accounts. Our checker identifies these patterns and warns you to choose something stronger.
Creating strong passwords requires combining several security principles to maximize resistance against hacking attempts. Length is the most important factor – aim for at least 12 characters, with 16 or more providing excellent security for sensitive accounts. Use a mix of all character types: uppercase letters, lowercase letters, numbers, and special symbols, as this dramatically increases the number of possible combinations. Make passwords random and avoid predictable patterns, words, or personal information. Each account should have a completely unique password so a breach in one service doesn't compromise others. Consider using passphrases – several random words combined together – as they're both strong and memorable (e.g., "Coffee-Dragon-Mountain-Piano77"). Never reuse passwords across different accounts, regardless of how strong they are. Avoid obvious substitutions or simple modifications of dictionary words. Don't use sequential numbers, repeated characters, or keyboard patterns. For maximum security and convenience, use a password generator like our main tool to create truly random passwords, then store them in a reputable password manager so you don't need to memorize them. Enable two-factor authentication on all accounts that support it as an additional security layer. Update passwords immediately if you suspect any security breach or if a service you use announces a data breach.
If our checker identifies your password as weak, take immediate action to protect your account. First, use our random password generator or passphrase generator to create a strong replacement password that meets all security criteria. Never just modify your current weak password by adding a number or symbol – create an entirely new, random password. Update the password on your account immediately, especially if it's for a critical service like email, banking, or healthcare. If you've reused this weak password on other accounts, change those passwords too, ensuring each account gets a unique password. Consider this a good opportunity to implement a password manager if you don't already use one – tools like LastPass, 1Password, or Bitwarden can generate, store, and autofill strong passwords across all your accounts. Enable two-factor authentication on the account for an extra security layer beyond just the password. Review your account's recent activity logs to check for any suspicious login attempts or unauthorized access that might have occurred while using the weak password. For financial or sensitive accounts, monitor your statements and consider placing fraud alerts if you suspect the weak password may have been compromised. Update your security questions with answers that aren't easily discoverable online. Finally, set a reminder to review and update your passwords periodically, checking them with this tool to ensure they remain strong.
Need to create strong passwords? Try our Random Password Generator, Passphrase Generator, Password List Generator, or Username Generator.
PIN Generator SHA256 Generator Base64 Encoder UUID Generator Number GeneratorYes, it's completely safe. All password checking happens locally in your web browser using JavaScript – your password never gets transmitted to our servers or anywhere on the internet. You can even disconnect from the internet after loading the page and the checker will still work. For extra peace of mind, you can check the browser's developer console to verify no network requests are made when checking passwords.
Our checker includes over 1,000 of the most commonly used weak passwords from various sources including data breaches, common dictionary words, keyboard patterns, and predictable sequences. While no database can include every possible weak password, ours covers the passwords most frequently targeted by hackers and automated cracking tools, providing strong protection against common password vulnerabilities.
If you have any doubts about your password's security, it's best to change it. Even if a password technically passes security checks, factors like reusing it across multiple accounts, sharing it with others, or using it for many years can compromise its security. When in doubt, generate a new random password using our password generator and update your account immediately.
Simply adding symbols to a common word or pattern doesn't make it strong. For example, "password!" or "qwerty@123" are still weak because they're based on predictable patterns that hackers check first. Symbols are only effective when combined with sufficient length, randomness, and variety of character types. Use a password generator to create truly random passwords rather than trying to manually add complexity to weak bases.
Check your passwords whenever you create new accounts, update existing passwords, or hear about security breaches affecting services you use. It's also wise to do a comprehensive password audit once or twice a year, checking all your important accounts and updating any weak or reused passwords. If you use a password manager, it often includes built-in weak password detection that alerts you automatically.