Random Password Generator
Create strong, secure passwords instantly to protect your online accounts from hackers and data breaches.
Password Security Tips
Using strong, unique passwords is one of the most important steps you can take to protect your online accounts. Here are some tips to enhance your password security:
Use Different Passwords
Never reuse passwords across multiple accounts. If one service is compromised, all your accounts would be at risk. Create unique passwords for each service you use.
Length Over Complexity
A longer password is generally more secure than a shorter, complex one. Aim for at least 12 characters, but 16-20 is even better for important accounts.
Use a Password Manager
Password managers securely store all your passwords, allowing you to use strong, unique passwords without having to memorize them all.
Enable 2FA
Two-factor authentication adds an extra layer of security beyond your password. Enable it on all accounts that offer this feature.
Avoid Personal Information
Don't use personal details like your name, birthday, or pet names in your passwords. This information is often easy to find and can make passwords vulnerable.
Check for Breaches
Regularly check if your accounts have been involved in data breaches and change your passwords immediately if they have been compromised.
Check if Your Password Has Been Compromised
Have your accounts been involved in data breaches? Enter your email address to check if your information has been compromised in known data breaches. This uses the Have I Been Pwned API and is done securely.
Note: This will redirect you to HaveIBeenPwned.com, a trusted service for checking data breaches. We do not store your email address.
How Password Security Works
Understanding how password security works can help you make better decisions about your online security. Here's a simplified explanation of password storage and cracking methods:
How Passwords Are Stored
When you create an account on a website, your password isn't stored as plain text (at least it shouldn't be). Instead, it goes through a one-way mathematical process called "hashing." This converts your password into a fixed-length string of characters that looks completely random. When you log in, the site hashes what you entered and compares it to the stored hash—not your actual password.
Common Password Cracking Methods
- Brute Force Attacks: Attackers try every possible combination of characters until they find the right one. Longer passwords require exponentially more time to crack using this method.
- Dictionary Attacks: Instead of trying every possible combination, attackers try common words, phrases, and known passwords. This is why you should avoid common words in your passwords.
- Rainbow Table Attacks: Attackers use pre-computed tables of password hashes to find matches more quickly. Modern password storage uses "salting" to defend against this.
- Credential Stuffing: When a site is breached, attackers try the same username/password combinations on other sites. This is why using unique passwords is so important.
- Phishing: Attackers trick you into giving them your password directly, often through fake websites or emails. No password strength can protect against this—you need to be vigilant.
Password Entropy and Strength
Password entropy measures how unpredictable a password is—essentially, how many guesses would be needed, on average, to find the correct password. Each type of character (lowercase, uppercase, numbers, symbols) you include increases entropy, as does increasing the length.
For example:
- An 8-character password with only lowercase letters has about 38 bits of entropy (~274 billion possible combinations)
- A 12-character password with mixed case letters, numbers, and symbols has about 72 bits of entropy (~4.7 quadrillion times stronger)
This is why our generator defaults to 16 characters with all character types enabled—it creates passwords with very high entropy that would take centuries to crack with current technology.
Password Managers: The Ultimate Security Tool
Using a password manager is one of the most effective ways to improve your online security. Here's why you should consider using one and some popular options:
Benefits of Using a Password Manager
- Use Strong, Unique Passwords: Generate and store complex passwords for every site without needing to remember them
- Auto-fill Functionality: Save time and reduce typing errors with automatic form filling
- Cross-Device Synchronization: Access your passwords securely across all your devices
- Breach Alerts: Many password managers alert you if your credentials appear in known data breaches
- Secure Notes: Store other sensitive information like credit card details and secure notes
- Sharing Capabilities: Securely share passwords with family members or colleagues
Popular Password Managers Comparison
| Name | Free Version | Platforms | Key Features |
|---|---|---|---|
| Bitwarden | Yes (robust free tier) | Windows, macOS, Linux, iOS, Android, Browser Extensions | Open-source, unlimited passwords, self-hosting option |
| LastPass | Yes (limited) | Windows, macOS, Linux, iOS, Android, Browser Extensions | Emergency access, password sharing, security dashboard |
| 1Password | No (free trial) | Windows, macOS, Linux, iOS, Android, Browser Extensions | Travel mode, "Watchtower" monitoring, local storage option |
| Dashlane | Yes (limited) | Windows, macOS, iOS, Android, Browser Extensions | VPN included in premium, dark web monitoring, automatic password changer |
| KeePass | Yes (completely free) | Windows (official), unofficial ports for other platforms | Fully offline, open-source, highly customizable with plugins |
We recommend trying several password managers to find one that fits your workflow. Most offer free trials or free tiers to help you decide.
Frequently Asked Questions
A strong password typically includes:
- At least 12-16 characters in length (longer is better)
- A mix of uppercase and lowercase letters
- Numbers and special characters (symbols)
- No common words, phrases, or predictable patterns
- No personal information that could be easily guessed
The strength of a password is primarily determined by its length and randomness. Our password generator creates passwords with high entropy (randomness) to maximize security.
Humans are inherently bad at creating random, secure passwords. We tend to:
- Use patterns that make passwords easier to remember but also easier to crack
- Reuse passwords across multiple sites
- Use personal information that might be easily discovered
- Make simple substitutions (like "p@ssw0rd") that cracking algorithms can easily account for
Password generators create truly random combinations that are much more secure than human-created passwords. They eliminate the biases and patterns we naturally introduce when creating passwords ourselves.
Current cybersecurity best practices have moved away from recommending regular password changes on a fixed schedule (like every 90 days). Research has shown that forced frequent password changes often lead to weaker passwords or minor variations of the same password.
Instead, you should change your passwords:
- Immediately if there's a known data breach affecting a service you use
- If you suspect someone knows your password
- When you've shared a password with someone who no longer needs access
- If you've been using the same password for a very long time
Using unique, strong passwords for each service and enabling two-factor authentication where available is now considered more important than frequent password rotation.
Our online password generator is safe because it generates passwords entirely in your browser - the passwords are never sent to our servers or stored anywhere.
However, for maximum security with extremely sensitive accounts (like primary email accounts or banking), consider:
- Using an offline password generator
- Using a reputable password manager that includes generation features
- Generating passwords on a device that isn't connected to the internet
For most everyday accounts, our generator provides more than adequate security, especially when compared to creating passwords yourself.
The truth is, you shouldn't try to memorize all your strong passwords. There are better options:
- Use a password manager: This is the most secure and convenient option. You only need to remember one strong master password.
- Create a password system: Develop a system for generating passwords that you can recreate when needed, but isn't obvious to others.
- Use passphrases: For accounts where you must memorize the password, use a long passphrase that's meaningful to you but not obvious to others.
- Write them down: For less critical accounts, writing passwords down and keeping them in a physically secure location can be acceptable (though not ideal).
A password manager remains the gold standard solution, as it handles both the generation and storage of strong, unique passwords for all your accounts.
Reputable password managers are designed with security as their primary focus. They use strong encryption to protect your data, and in most cases, the companies behind them cannot access your actual passwords because of their "zero-knowledge" architecture.
While no system is 100% secure, password managers significantly improve your overall security compared to:
- Reusing passwords across multiple sites
- Using weak, easily remembered passwords
- Storing passwords in unencrypted documents or notes
- Using browser password storage (which is typically less secure)
The security benefits of using strong, unique passwords for each site far outweigh the theoretical risk of a password manager breach. Just be sure to use a very strong master password and enable two-factor authentication on your password manager account.
References and Further Reading
- National Institute of Standards and Technology (NIST). (2020). Digital Identity Guidelines: Authentication and Lifecycle Management. NIST Special Publication 800-63B.
- Hunt, T. (2019). Have I Been Pwned: Pwned Passwords. Retrieved from https://haveibeenpwned.com/Passwords
- Bonneau, J. (2012). The Science of Guessing: Analyzing an Anonymized Corpus of 70 Million Passwords. IEEE Symposium on Security and Privacy.
- Wheeler, D. L. (2016). zxcvbn: Low-Budget Password Strength Estimation. Dropbox Tech Blog.
- Burr, W. E., Dodson, D. F., Newton, E. M., Perlner, R. A., Polk, W. T., Gupta, S., & Nabbus, E. A. (2013). Electronic Authentication Guideline. NIST Special Publication 800-63-2.
- Grassi, P. A., Garcia, M. E., & Fenton, J. L. (2017). Digital Identity Guidelines. NIST Special Publication 800-63-3.
- Center for Internet Security (CIS). (2021). Password Policy Guide. CIS Controls.