Generators
Strong Password Generator
Create strong, random passwords with custom length and character sets.
Press Generate to measure strength.
Tip: click any password to copy it.
What is the Strong Password Generator?
A strong password is your first line of defense online, yet most people reuse short, predictable passwords across accounts. This free password generator creates truly random passwords using your browser's cryptographic random number generator, so every password is unpredictable and unique. You control the length from 8 to 64 characters and choose exactly which character sets to include: uppercase letters, lowercase letters, numbers, and symbols.
How to use it
- Drag the length slider to set your password length — 16 characters or more is recommended for important accounts.
- Tick the character sets you want. Keeping all four selected gives maximum strength.
- Optionally exclude ambiguous characters like 0, O, 1, l and I if you will read or type the password manually.
- Choose how many passwords to generate (1–10) and click Generate.
- Click any password to copy it instantly, or use Copy all to grab every password at once.
Key features
- Entropy-based strength meter rating each password as Weak, Fair, Strong or Very Strong.
- Cryptographically secure randomness via crypto.getRandomValues.
- Ambiguous-character exclusion for passwords you need to read aloud or type by hand.
- Bulk generation of up to 10 passwords with a single click.
- Everything runs locally in your browser — passwords are never sent anywhere.
Real-world use cases
- Creating a unique password for every new account you sign up for.
- Resetting a compromised password quickly after a data breach.
- Generating guest Wi-Fi passwords that are strong yet easy to type.
- Setting up service accounts and API credentials during development.
Practical tips
- Use a password manager so you never have to memorize these passwords.
- Longer beats complex: a 20-character mixed password resists brute force for centuries.
- Never reuse a password across sites — one breach should not unlock everything.
- Aim for at least 80 bits of entropy (Strong or better on the meter) for banking and email.
Frequently Asked Questions
How long should my password be?
At least 12 characters for everyday accounts and 16 or more for email, banking and anything holding money or identity documents. Longer passwords increase the search space exponentially, which is what defeats brute-force attacks.
What does “bits of entropy” mean?
Entropy measures unpredictability. A password with 80 bits of entropy has 2⁸⁰ possible combinations — far beyond what any attacker can guess. The meter rates under 50 bits as Weak and 110+ bits as Very Strong.
Are my generated passwords stored anywhere?
No. Generation happens entirely in your browser with JavaScript, and nothing is sent to any server. Once you leave the page, the passwords are gone unless you saved them.
What are ambiguous characters and why exclude them?
Characters like 0 (zero), O (capital o), 1 (one), l (lowercase L) and I (capital i) look alike in many fonts. Excluding them helps when you must read a password aloud or type it from paper.
Can I use these passwords for banking and Wi-Fi?
Yes. They are random and meet typical complexity rules. Just make sure the site accepts symbols if you include them, and store the password in a password manager rather than reusing it.