Random Password Generator
Generate strong, secure passwords with customizable options. Instant strength analysis and entropy calculation.
Password Strength Guide
Weak
Less than 50 bits of entropy
- Short passwords
- Limited character sets
- Easy to guess
Medium
50-100 bits of entropy
- Good for most uses
- Mixed character types
- Reasonable length
Strong
Over 100 bits of entropy
- Highly secure
- All character types
- Suitable for sensitive accounts
How It Works
This random password generator creates strong, cryptographically secure passwords based on your selected criteria. Every password is generated fresh with true randomness.
What is Password Entropy?
Entropy measures the randomness and complexity of a password. Higher entropy means more difficult to crack. Our calculator determines entropy based on password length and the character types used.
Key Features:
- Customizable length (4-128 characters)
- Choose character types: uppercase, lowercase, numbers, symbols
- Real-time strength analysis
- Entropy calculation in bits
- One-click copy to clipboard
- All processing done locally (100% private)
Highly Secure
Generate cryptographically secure random passwords with true randomness. No server logs, completely private.
Fully Customizable
Control password length and character types. Choose exactly what you need for any account or system requirement.
Instant Analysis
Get real-time strength feedback and entropy calculation. Know exactly how secure your password is before using it.