Password Generator
Generate secure, random passwords with custom options
Methodology & standardsRuns on your device
Inputs
Results update liveInterpretation
How Password Security works
The Password Generator uses the Web Crypto API to generate cryptographically secure random passwords. It builds a character pool from your selected options and uses random values to pick characters, ensuring true randomness that is safe for security-critical use.
Example
Key features
A realistic scenario showing how the calculation guides a practical decision.
Formula
Entropy = log2(pool_size ^ length). A 16-char password with all types (~94 chars) has ~105 bits of entropy.
- Cryptographically secure random generation
- Configurable length from 4 to 128 characters
- Toggle uppercase, lowercase, numbers, and symbols
- Generate up to 20 passwords at once
- Visual password strength indicator
- One-click copy to clipboard
Watch out
Common mistakes
- For maximum security, use passwords of at least 16 characters with all character types enabled. Never reuse passwords across different accounts, and consider using a password manager to keep track of them.
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