Password Generator
Free online password generator. Create strong, secure, random passwords instantly. Customizable length, characters, and options. 100% private, no data stored.
Quick Presets
How to Use Password Generator
Choose Password Length
Use the slider to select your desired password length. Longer passwords are more secure. We recommend at least 12 characters for sensitive accounts, and 16+ for maximum security.
Select Character Types
Check the character types you want to include: uppercase letters (A-Z), lowercase letters (a-z), numbers (0-9), and special symbols (!@#$%^&*). More variety means stronger passwords.
Configure Advanced Options
Enable "Exclude similar characters" to avoid confusion between similar-looking characters like 'i', 'l', '1', 'L', 'o', '0', 'O'. This makes passwords easier to type and read.
Generate and Copy
Click "Generate Password" to create your secure password. Use the copy button to instantly copy it to your clipboard. Generate multiple passwords at once using the count option.
Tips for Creating Strong Passwords
- Length matters - Each additional character exponentially increases security. A 16-character password has 10^28 possible combinations.
- Mix character types - Using all four character types (uppercase, lowercase, numbers, symbols) creates the strongest passwords.
- Avoid patterns - Don't use dictionary words, birthdays, or common sequences like "123456" or "password".
- Unique for each account - Never reuse passwords across different websites or services.
- Use a password manager - Store your generated passwords securely in a password manager like Bitwarden, 1Password, or LastPass.
Frequently Asked Questions
A strong password has three key characteristics: length (at least 12 characters, ideally 16+), complexity (mix of uppercase, lowercase, numbers, and symbols), and randomness (no predictable patterns or dictionary words). Our password generator creates passwords that meet all these criteria.
Yes, absolutely secure. All password generation happens entirely in your browser using JavaScript's cryptographically secure random number generator (crypto.getRandomValues()). No passwords are ever sent to any server. Your generated passwords remain completely private and never leave your device.
Password length recommendations by use case:
- Regular accounts: 12-14 characters minimum
- Financial/banking: 16-20 characters recommended
- API keys/tokens: 32-64 characters for maximum security
- PIN codes: 4-6 digits (when required by system)
Longer is always better - each additional character exponentially increases the number of possible combinations.
A random password uses unpredictable character sequences, making it impossible to guess. A strong password combines randomness with sufficient length and character variety. Our tool generates both: every password is cryptographically random AND meets strength criteria through customizable options.
Yes! Use the "Generate Count" option to create up to 100 unique passwords at once. You can then copy all passwords or export them as a CSV file for record keeping. This is perfect for IT administrators setting up multiple accounts or creating initial passwords for team members.
Characters like 'i', 'l', '1', 'L', 'o', '0', 'O' look very similar, especially in certain fonts. Excluding them prevents:
- Typing errors when entering passwords manually
- Confusion when reading passwords aloud
- Issues with OCR when scanning printed passwords
This option is recommended for passwords you'll need to type or communicate verbally.
How Secure Password Generation Works
Our password generator uses cryptographically secure methods to ensure true randomness and security:
Cryptographic Random Number Generation
We use the Web Crypto API's crypto.getRandomValues() method, which provides cryptographically strong random numbers. This is the same level of randomness used in SSL/TLS encryption and secure communications worldwide.
Standard Random (Math.random)
Not cryptographically secure
Predictable patterns possible
Crypto Random (Our Method)
Cryptographically secure
True unpredictability guaranteed
Password Entropy Explained
Password strength is measured in entropy - the amount of randomness in the password. Higher entropy means more possible combinations and harder to crack.
| Password Type | Characters | Entropy (bits) | Time to Crack* |
|---|---|---|---|
| 8-char lowercase | 26 | 37.6 | ~5 hours |
| 8-char mixed | 70 | 48.8 | ~2 years |
| 12-char mixed | 70 | 73.2 | ~52,000 years |
| 16-char mixed | 70 | 97.6 | ~34 billion years |
| 20-char mixed | 70 | 122 | ~quadrillion years |
*Based on 10 trillion guesses per second (modern GPU cluster)
Why Browser-Based Generation?
Generating passwords in your browser (client-side) provides several security advantages:
- Zero network transmission - Passwords never travel over any network
- No server logs - We cannot log what we never receive
- Works offline - Once loaded, the tool works without internet
- Instant generation - No network latency, immediate results
- Complete privacy - Your passwords exist only on your device
Password Security Best Practices
Use Unique Passwords
Never reuse passwords across different accounts. If one service is breached, unique passwords prevent attackers from accessing your other accounts.
Enable Two-Factor Auth
Even the strongest password benefits from 2FA. Enable two-factor authentication wherever available for an extra layer of security.
Use a Password Manager
Store your generated passwords securely. Password managers encrypt your credentials and auto-fill them, eliminating the need to remember complex passwords.
Regular Updates
Change passwords periodically, especially for sensitive accounts. If you hear about a data breach, immediately update passwords for affected services.
About Password Generator
Free online password generator. Create strong, secure, random passwords instantly. Customizable length, characters, and options. 100% private, no data stored.