Create strong, cryptographically secure passwords. Customize length and character types. All generation happens in your browser—no passwords are stored or transmitted.
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Contact UsStrong passwords are your first line of defense against unauthorized access. A good password combines length, complexity, and unpredictability. Our tool uses crypto.getRandomValues—the same cryptographic API used by browsers for secure operations—to generate truly random passwords that are resistant to guessing and brute-force attacks.
Length matters most. Each additional character exponentially increases the number of possible combinations. A 16-character password with uppercase, lowercase, numbers, and symbols has over 95^16 possible combinations— far beyond what attackers can feasibly brute-force. Character variety further increases entropy. Include uppercase, lowercase, numbers, and symbols when the service allows it. Our strength meter and entropy display help you understand how secure your password is.
Even the strongest password is useless if reused across accounts or written on a sticky note. Use a reputable password manager to store unique passwords for each service. Generate a strong master password for your password manager— you can use this tool—and enable two-factor authentication wherever available.
Generate a new password when creating new accounts, after a data breach affecting a service you use, or when you suspect compromise. Avoid recycling old passwords. If a service offers passkeys or FIDO2 authentication, prefer those over traditional passwords when possible.
Entropy measures the randomness of a password in bits. Each bit doubles the number of possible combinations an attacker must try. A 12-character password with mixed case, numbers, and symbols has roughly 79 bits of entropy — enough to resist brute-force attacks for decades. Our strength meter shows entropy in real time so you can hit your target. For hashing passwords in your application, try our hash generator.
Yes. This tool uses the Web Crypto API (crypto.getRandomValues), which provides cryptographically secure randomness. All generation happens locally in your browser — no passwords are transmitted or stored on any server.
Current NIST guidelines recommend changing passwords only after a confirmed breach, not on a fixed schedule. The best practice is to use a unique, strong password for every account and enable two-factor authentication wherever possible. Need secure authentication built into your app? Our web development team implements industry-standard auth flows with proper hashing and MFA.