Random Password Generator
Generate strong, random passwords instantly. Create secure passwords with custom length and character options.
Generated Password
Random · 1 generatedeTxKIG2S3Qm3N8un
Password tips
- Use at least 12 characters for random passwords
- Memorable passwords with 4+ words are secure and easy to remember
- Never reuse passwords across different accounts
- Consider using a password manager
Why use random passwords?
Humans are terrible at creating random passwords. We default to predictable patterns -dictionary words, birthdays, keyboard sequences, and simple substitutions (p@ssw0rd). Attackers know these patterns and use them to crack passwords efficiently.
A truly random password has no pattern to exploit. Each character is independently selected, making the password resistant to dictionary attacks, pattern matching, and educated guessing.
What makes a password strong?
Password strength comes from entropy -the measure of randomness or unpredictability. Higher entropy means more possible combinations an attacker must try.
Length matters most. A 20-character password using only lowercase letters (26^20 combinations) is stronger than a 10-character password using all character types (95^10 combinations).
Character variety helps. Using uppercase, lowercase, numbers, and symbols increases the possible characters at each position, but the benefit is logarithmic -adding length is more effective.
Randomness is essential. “correcthorsebatterystaple” looks long but follows a pattern. True randomness like “kX9#mP2$vL5@nQ8” has no exploitable structure.
Recommended password practices
Use a password manager. The only way to use strong, unique passwords for every account is to not remember them yourself. Password managers generate, store, and autofill passwords securely.
Never reuse passwords. When one service is breached, attackers try those credentials everywhere. Unique passwords contain the damage.
Longer is better. Aim for at least 16 characters for important accounts. 20+ characters for critical accounts like email and banking.
Enable two-factor authentication. Even strong passwords can be phished. 2FA adds a second layer that’s much harder to compromise.
Password length and crack times
Assuming an attacker can test 10 billion passwords per second (high-end hardware):
| Length | Lowercase only | Mixed case + numbers + symbols |
|---|---|---|
| 8 chars | Instant | 14 hours |
| 12 chars | 1 week | 2,000 years |
| 16 chars | 10 million years | 10 billion years |
| 20 chars | Heat death of universe | Heat death of universe |
These estimates assume true randomness. Predictable patterns are cracked much faster.
How this tool works
This generator uses cryptographically secure randomness to create passwords with no predictable patterns. Select your desired length and character types, then generate as many passwords as you need. The generation happens entirely at the edge via a QuantCDN Edge Function -no passwords are logged or stored.