Password Generator
Create strong, secure passwords instantly
Password Strength Metrics
Why Strong Passwords Matter
Weak passwords are the leading cause of security breaches. Simple passwords like '123456' or 'password' can be cracked instantly. Even seemingly complex passwords based on words or patterns are vulnerable to dictionary attacks.
A strong password should be long (12+ characters), random, and include a mix of character types. This generator creates truly random passwords that resist both brute-force and dictionary attacks.
Use unique passwords for each account. If one site is breached, your other accounts remain safe. A password manager can help you store and manage unique passwords for every site.
Password Strength Factors
Length
Most important factor. Each character adds exponentially more combinations.
Character Variety
Using upper, lower, numbers, and symbols increases the pool of possible characters.
Randomness
No patterns, words, or personal info. True randomness defeats dictionary attacks.
Uniqueness
Different password for each account. Never reuse passwords across sites.
Password Strength Comparison
| Password Type | Entropy | Crack Time* | Rating |
|---|---|---|---|
| 6 chars, lowercase | 28 bits | < 1 second | Terrible |
| 8 chars, mixed case | 46 bits | Minutes | Weak |
| 10 chars, all types | 65 bits | Years | Good |
| 12 chars, all types | 78 bits | Centuries | Strong |
| 16 chars, all types | 104 bits | Billions of years | Excellent |
| 20+ chars, all types | 130+ bits | Until heat death | Overkill |
Password Best Practices
Use a Password Manager
Store unique passwords securely. You only need to remember one master password.
Enable 2FA
Two-factor authentication protects you even if passwords are compromised.
Change After Breaches
If a service is breached, change that password immediately and any reused passwords.
Never Share Passwords
Legitimate services never ask for your password via email or phone.
Frequently Asked Questions
How long should my password be?
Minimum 12 characters, ideally 16+. Length is more important than complexity. A 20-character lowercase password is stronger than an 8-character complex one.
Is this generator secure?
Yes. Passwords are generated locally in your browser using cryptographic random functions. Nothing is transmitted or stored. We never see your passwords.
Should I use special characters?
Yes, when allowed. Symbols increase the character pool from 62 to 94+, significantly increasing crack time. Some sites have restrictions on which symbols are allowed.
How often should I change passwords?
Only when compromised or for high-security accounts. Frequent mandatory changes lead to weaker passwords. Use unique, strong passwords and change them only when necessary.
Pro Tips
- Bookmark this calculator for quick access in the future
- Use the share button to send your results to others
- Try different scenarios to compare outcomes
- Check out our related calculators for more insights
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