Password Generator
Our password generator helps you create secure, random passwords with customizable length and character sets. Generate strong passwords instantly using Web Crypto API for cryptographically secure randomness. Works 100% in your browser with complete privacy.
- Security
- Crypto API
- Mode
- In-browser
- Time
- Instant
- Price
- Free
Cryptographically Secure
Uses Web Crypto API for true randomness suitable for cryptographic purposes.
100% Private
Everything runs locally. Your passwords never leave your device.
Fully Customizable
Customize length (4-128 chars) and character types to match your needs.
Generate Secure Password online
Customize length and character types, then generate instantly.
Click Generate to create a password
What is a Password Generator?
A password generator is a tool that creates random, secure passwords for use in online accounts, applications, and systems. Unlike human-created passwords which are often predictable and weak (like "password123" or "MyDog2024"), password generators use cryptographically secure random number generators to create passwords that are extremely difficult to guess or crack through brute force attacks.
Password generators help users create strong, unique passwords without having to think of them manually. They eliminate common password weaknesses such as dictionary words, personal information, sequential patterns, and reused passwords. According to NIST Special Publication 800-63B, strong passwords should be long, random, and unique to each account. The MDN Web Crypto API provides the cryptographic primitives needed for secure password generation in web browsers.
Modern password generators use the Web Crypto API's crypto.getRandomValues() function, which provides cryptographically strong random values suitable for security-sensitive applications. This ensures that each generated password is truly random and unpredictable, making them resistant to both brute force and dictionary attacks.
✗Weak Passwords
- •Dictionary words or common phrases
- •Personal information (names, dates)
- •Sequential patterns (12345, abcde)
- •Reused across multiple accounts
- •Short length (<12 characters)
✓Strong Passwords
- •Random and unpredictable
- •Long length (16+ characters)
- •Mixed character types
- •Unique to each account
- •Generated with crypto API
Password Security Statistics
Real data showing the importance of strong passwords
The Password Problem
According to Verizon's Data Breach Investigations Report, 81% of data breaches are caused by weak or stolen passwords. The most common passwords include "123456", "password", and "123456789", which can be cracked in milliseconds. Using a password generator to create strong, unique passwords for each account is one of the most effective ways to protect your online security. Google's security best practices emphasize the importance of strong, unique passwords.
Why Use Password Generators?
Password generators offer numerous advantages for protecting your online accounts and data:
Cryptographically Secure
Password generators use cryptographically secure random number generators (like Web Crypto API) to create truly random passwords. This makes them extremely difficult to predict or crack through brute force attacks, providing significantly better security than human-created passwords.
Eliminates Human Weaknesses
Humans tend to create predictable passwords using dictionary words, personal information, or simple patterns. Password generators eliminate these weaknesses by creating random, unpredictable passwords that don't follow common patterns or contain personal information.
Unique Passwords for Each Account
Password generators make it easy to create unique passwords for each account. This is critical because if one account is compromised, unique passwords prevent attackers from accessing your other accounts. Reusing passwords is one of the biggest security risks.
Saves Time and Mental Effort
Creating strong passwords manually is time-consuming and mentally taxing. Password generators create secure passwords instantly, saving you time and ensuring you don't compromise on security due to convenience. You can generate multiple passwords quickly for different accounts.
Customizable Length and Complexity
Password generators allow you to customize password length and character types to meet specific requirements. Some systems require certain character types or have length restrictions. Generators let you create passwords that meet these requirements while maintaining security.
Protects Against Common Attacks
Generated passwords protect against common attack methods including dictionary attacks (trying common words), brute force attacks (trying all combinations), and credential stuffing (using leaked passwords from other breaches). Random, unique passwords make these attacks ineffective.
How it works
Our password generator makes it easy to create secure passwords in seconds. Follow these simple steps:
- 1
Set password length
Adjust the length slider to set your desired password length. For maximum security, use at least 16 characters. Longer passwords (20+ characters) are even more secure. The generator supports passwords from 4 to 128 characters. Most security experts recommend 16-20 characters for strong passwords.
- 2
Select character types
Choose which character types to include: uppercase letters (A-Z), lowercase letters (a-z), numbers (0-9), and special characters (!@#$%^&*...). For maximum security, include all character types. However, some systems may have restrictions, so check the requirements of the system you're creating the password for. At least one character type must be selected.
- 3
Generate and copy password
Click 'Generate' to create a single secure password, or 'Generate 5' to create multiple passwords at once. The password is generated using the Web Crypto API for cryptographically secure randomness. Click 'Copy' to copy the password to your clipboard. Store the password securely in a password manager. Never share passwords or reuse them across multiple accounts.
Why use our Password Generator?
- Web Crypto API for true randomness
- 100% client-side processing
- No registration required
- Customizable length and character sets
- Generate multiple passwords at once
Frequently Asked Questions
What is a password generator?
A password generator is a tool that creates random, secure passwords for use in online accounts, applications, and systems. Unlike human-created passwords which are often predictable and weak, password generators use cryptographically secure random number generators to create passwords that are extremely difficult to guess or crack.
How secure are generated passwords?
Our password generator uses the Web Crypto API (crypto.getRandomValues) to generate cryptographically secure random passwords. This API provides true randomness suitable for cryptographic purposes. The passwords are generated entirely in your browser and never sent to any server, ensuring maximum security and privacy.
What password length should I use?
For maximum security, use passwords of at least 16 characters. Longer passwords (20+ characters) are even more secure. The generator supports passwords from 4 to 128 characters. According to NIST guidelines, longer passwords are generally more secure than complex short passwords. A 16-character password with mixed character types provides excellent security for most use cases.
Should I include special characters?
Yes, including special characters significantly increases password strength by expanding the character set. However, some systems may not accept certain special characters, so check the requirements of the system you're creating the password for. Special characters add complexity and make passwords harder to crack through brute force attacks.
Is my password stored or sent to a server?
No, absolutely not. All password generation happens entirely in your browser using client-side JavaScript. Your passwords are never sent to any server, never stored anywhere, and never transmitted over the network. The Web Crypto API runs locally in your browser, ensuring complete privacy and security.
Can I generate multiple passwords at once?
Yes, you can click 'Generate 5' to create five passwords at once. This is useful when you need to create passwords for multiple accounts or want to choose from several options. All generated passwords follow the same settings (length and character types) you've configured.
What makes a password strong?
A strong password is long (16+ characters), includes multiple character types (uppercase, lowercase, numbers, special characters), is random and unpredictable, and is unique to each account. Strong passwords should not contain dictionary words, personal information, or common patterns. Our generator creates passwords that meet all these criteria.
Should I use a password manager?
Yes, absolutely. Password managers like 1Password, LastPass, Bitwarden, or the built-in browser password managers help you store and manage strong, unique passwords for all your accounts. They can also generate secure passwords for you. Using a password manager eliminates the need to remember multiple complex passwords.
Password Best Practices
Generating a strong password is only the first step. How you store, use, and manage that password determines whether your accounts stay secure over time.
Use at least 16 characters
Each extra character multiplies the number of possible combinations exponentially. A 12-character random password provides roughly 2 billion times more combinations than an 8-character one. For sensitive accounts — banking, email, cloud storage — aim for 16 characters or more.
Enable all four character types
Uppercase letters, lowercase letters, numbers, and symbols each add a separate dimension of complexity. An attacker cracking a password that includes symbols must test a pool of ~95 characters per position instead of ~26. Always enable symbols unless the site specifically disallows them.
Never reuse passwords across sites
Data breaches happen constantly. When one site's password database leaks, attackers immediately try those credentials on every major service (credential stuffing). If you reuse passwords, a breach at a minor forum can expose your email or banking account.
Store passwords in a password manager
A password manager (Bitwarden, 1Password, Dashlane) encrypts all your credentials behind one master password. It removes the temptation to reuse passwords or write them down. Most also auto-fill on websites, making strong unique passwords as convenient as weak reused ones.
Check for breaches and rotate exposed passwords
Use a service like haveibeenpwned.com to check whether your email address has appeared in known data breaches. If a site you use is breached, change your password for that site immediately — even if you have not received a notification. Do not wait for the company to contact you.
Use a passphrase for accounts you type often
For accounts where you type your password regularly (a work laptop login, for example), consider a passphrase: four or five random words joined together, such as “violet-crane-basin-forty”. Passphrases are highly resistant to brute-force attacks and much easier to type accurately than random character strings of equivalent security. You can also encode a passphrase as a QR code for easy mobile scanning.
Password Strength by Type
Not all passwords are equally hard to crack. The table below shows approximate offline crack times for common password strategies against a modern GPU cluster running billions of guesses per second.
| Password Type | Example | Entropy | Est. Crack Time | Recommended? |
|---|---|---|---|---|
| Name + birth year | sarah1987 | Very low | Instant | ❌ Never |
| Keyboard pattern | qwerty123 | Very low | < 1 second | ❌ Never |
| Random 8 chars (lowercase only) | kxpmrblq | Low | < 1 hour | ❌ No |
| Random 8 chars (mixed) | K$3mRb!q | Medium | 1–3 days | ⚠️ Minimum only |
| Random 12 chars (mixed) | Xk9#mRb2!qLv | High | 3,000+ years | ✅ Good |
| Random 16 chars (mixed) | Xk9#mRb2!qLvP$7w | Very high | 1 billion+ years | ✅ Best |
| 4-word passphrase | violet-crane-basin-forty | High | 1 million+ years | ✅ Great for typing |
Crack time estimates assume offline brute-force with a dedicated GPU cluster (10 billion guesses/second). Online attacks are throttled by login rate-limiting, so even a medium-strength password is difficult to crack remotely. However, once a database is breached and hashed passwords are leaked, offline cracking begins immediately — this is where length and true randomness matter most.
From the FixTools Blog
Free Password Generator: What Makes a Password Truly Secure?
The science behind entropy, why length beats complexity, and how to manage hundreds of unique passwords without memorising them.
Password Generator Guides
Guides for generating passwords for specific platforms and needs:
All Password Generator guides (12 total)
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