Password Generator
Generate strong, secure passwords and passphrases with customizable options
Generated Password
R).xa:n({zOs,gL#
Password Strength
Strength Score
Strong (77/100)
Entropy
102.3 bits
Estimated crack time:
98976468+ million years
Recommended: 16+ characters
Leave empty to use default symbols
Bulk Generation
No passwords generated yet. Click a button above to generate bulk passwords.
About Password Generation
A secure password generator creates random passwords using cryptographically secure randomness, ensuring that each generated password is unpredictable and resistant to brute-force attacks. The strength of a generated password depends on three key properties: length (longer passwords require exponentially more time to crack), character variety (uppercase, lowercase, numbers, and symbols increase the possible combinations), and uniqueness (a new password for each site prevents credential stuffing attacks across services). Most security experts recommend using unique, randomly-generated passwords for every online account to minimize the impact of a data breach at any single service.
Password generators have become essential tools in modern cybersecurity. Unlike human-created passwords (which are often predictable, reused, or based on personal information), machine-generated passwords eliminate the weaknesses that attackers exploit. Whether you're securing your personal accounts, managing API keys for development environments, or creating temporary passwords for user onboarding workflows, a reliable password generator removes the burden of manually crafting strong credentials while guaranteeing cryptographic strength.
Common Use Cases
- Generating master passwords: Create one ultra-strong password for your password manager vault to unlock all other credentials.
- Creating API keys and secrets: Generate unpredictable tokens for authentication in development environments, CI/CD pipelines, and third-party integrations.
- Onboarding users with temporary passwords: Issue secure temporary passwords to new users that must be changed on first login.
- Testing authentication systems: Generate batches of passwords for load testing, security audits, and verification of password strength enforcement rules.
How to Use This Tool
- Select a mode: Choose between "Random Password" for character-based generation or "Passphrase" for memorable word-based passwords.
- Configure your options: For random passwords, adjust length (8-128 characters), toggle character sets (uppercase, lowercase, numbers, symbols), and exclude ambiguous characters (0, O, I, l, 1). For passphrases, choose word count (3-8 words), separator (hyphen, space, underscore, period), and optional capitalization/numbers.
- Generate and copy: Click "Regenerate" to create a new password, view the strength meter and entropy calculation, then copy to your clipboard with one click.
Features
Dual Generation Modes
Random character-based passwords or memorable passphrases—choose based on whether you need maximum entropy or human memorability.
Real-Time Strength Analysis
Instant entropy (in bits) and estimated crack time calculations show how secure your password is against modern hardware.
Bulk Generation
Generate 5, 10, 25, or 50 passwords at once for batch operations, user provisioning, or testing—with copy-all and download functionality.
Customization Options
Fine-grained control over character sets, ambiguous character exclusion, custom symbols, word counts, separators, and capitalization patterns.
Frequently Asked Questions
How secure is a generated password?
This tool uses cryptographically secure random number generation (Web Crypto API), meaning each password has truly random entropy. A 16-character password with mixed character types has approximately 95 bits of entropy—strong enough to resist brute-force attacks for centuries with modern hardware. The strength meter displays entropy in bits and estimates crack time based on attack speed assumptions.
What makes a password strong?
Password strength depends on three factors: length (every additional character exponentially increases crack time), character diversity (using uppercase, lowercase, numbers, and symbols multiplies possible combinations), and randomness (human-predictable patterns are weak even if long). The tool handles all three automatically—generated passwords are long, diverse, and random.
Should I use a passphrase instead of a random password?
Passphrases are ideal when you need to memorize a password (like a password manager master password), as they're easier to remember than random strings. A 5-word passphrase with numbers typically matches the strength of a 16+ character random password. For accounts managed by a password manager, random passwords are recommended as they don't need to be remembered.
How long should my password be?
For password-manager-stored passwords, 16-24 characters is ideal and maximally resistant to any foreseeable attack. For passphrases you need to remember, 5-6 words provides strong security while remaining memorable. For API keys and secrets, 32+ characters is recommended to add extra margin against theoretical attacks.