Strong Password Generator

This tool uses the Web Crypto API to create cryptographically secure random values right in your browser. Every password is generated on your device — nothing gets transmitted, logged, or stored on any server. You pick the rules (length, character types, exclusions) and the generator produces passwords that are statistically impossible to predict. Unlike passwords people come up with, machine-generated ones don't contain patterns, dictionary words, or personal info that attackers can exploit.

NIST updated its guidelines in 2026: passwords used as single-factor authentication should now be at least 15 characters. A strong password comes down to three things — length, randomness, and uniqueness. A 15-character password with mixed character types would take billions of years to brute-force with current hardware. But length alone isn't enough. The characters need to be truly random (not based on words, names, or patterns) and every account needs its own unique password.

This tool has three generation modes. Random passwords give you maximum security with mixed characters. Passphrases use random dictionary words separated by a character — easier to remember while still being secure through length. PINs are numeric-only codes for banking, phone locks, and quick-access situations.

Creating a strong password is just the first step. Here's what security pros recommend to keep your accounts safe.

Yes. All passwords are generated 100% client-side using JavaScript and the Web Crypto API. No data leaves your browser — no network requests, no server logs, no cookies. The connection uses HTTPS, and the source code is transparent. It's the same cryptographic method used by major password managers like Bitwarden and 1Password.

NIST updated its guidelines in 2026: single-factor passwords should be at least 15 characters. With MFA enabled, 8 characters is the minimum — but longer is always better. A 15-character password with mixed character types would take billions of years to crack with current hardware. This tool goes up to 128 characters.

A password is a random string of characters (like K9$mPq2#vL7n) — maximum entropy per character. A passphrase is a sequence of random words joined by a separator (like correct-horse-battery-staple), which is easier to remember while staying secure thanks to its length. Both work well — passphrases are better when you need to type them manually.

Yes. You can generate up to 100 passwords in a single batch. Copy them in multiple formats (plain text, JSON, CSV, JavaScript array) or download as a file (TXT, CSV, JSON, XML). Great for teams, database seeding, testing, or migrating accounts.

Not yet. As of 2026, only a few hundred major sites support passkeys. The average person has 100+ online accounts, and most of them still need traditional passwords. Password generators aren't going anywhere until passkey support catches up.

A properly generated 15+ character random password is pretty much impossible to crack through brute force. The real risks are phishing (tricking you into entering your password on a fake site), data breaches (the service stores your password insecurely), and malware (keyloggers recording your keystrokes). Use unique passwords, enable 2FA, and watch out for phishing.

NIST no longer recommends regular password changes unless there's evidence of a compromise. If you use strong, unique passwords with 2FA enabled, changing them on a schedule doesn't really help and often leads to weaker passwords. Change a password right away if the service reports a breach or if you suspect someone got in.

Only about 27% of US adults use a password generator. 79% mix words with numbers manually, and 57% reuse variations of old passwords. Using a generator puts you well ahead of most people when it comes to account security.