Password Generator
Generate strong, secure passwords instantly. Customize length, characters, and complexity. Free online password generator.
CL
CalcLeap Editorial Team
Reviewed by certified professionals · Last updated April 1, 2026
Click Generate to create a password
Strength: —
A-Z
a-z
0-9
!@#$%^&*
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📐 How We Calculate This
Our calculators use industry-standard formulas sourced from authoritative references including government agencies, academic institutions, and professional organizations. We validate all calculations against multiple independent sources.
Results are estimates for educational purposes. Professional advice from a licensed expert is recommended for important financial, health, or legal decisions.
📚 Sources & References
Frequently Asked Questions
How secure are the generated passwords?▼
Passwords are generated using the Web Crypto API (crypto.getRandomValues), which provides cryptographically secure random numbers. This is the same technology used by password managers like 1Password and Bitwarden.
What makes a password strong?▼
Password strength depends on length and character diversity. A 16+ character password with uppercase, lowercase, numbers, and symbols would take billions of years to crack with current technology. Length is the single most important factor.
Are my generated passwords stored anywhere?▼
No. Passwords are generated entirely in your browser using JavaScript. Nothing is sent to any server, logged, or stored. Once you leave or refresh the page, the password exists only where you've copied it.
How long should my password be?▼
Security experts recommend at least 12 characters, but 16+ is ideal. For high-security accounts (banking, email, cloud), use 20+ characters. Every additional character exponentially increases the time required to crack the password.
Should I use a different password for every account?▼
Absolutely. Reusing passwords means that if one service is breached, all your accounts are at risk. Use a password manager to store unique passwords for every account, and generate a new one with this tool each time.