Weak passwords are still the number one cause of hacked accounts. In this guide you will learn exactly what makes a password strong in 2026, the mistakes to avoid, and how to create and store secure passwords for free.
What makes a password strong?
A strong password has three qualities: it is long, random, and unique. Length matters most — every extra character multiplies the number of combinations an attacker must try. Security experts now recommend at least 12 to 16 characters, mixing uppercase and lowercase letters, numbers and symbols.
You can instantly create one with our free Password Generator, which builds cryptographically random passwords right in your browser, and you can test any password with the Password Strength Checker.
Common password mistakes to avoid
- Using names, birthdays or dictionary words
- Reusing the same password across multiple sites
- Simple substitutions like “P@ssw0rd” that attackers expect
- Sharing passwords over email or chat
How long should a password be?
A 12-character random password can take centuries to crack with current hardware, while an 8-character one can fall in hours. For important accounts — email, banking, work — aim for 16 characters or use a passphrase of several random words.
Use a unique password for every account
If one site is breached and you reused that password, every other account is exposed. The safest approach is a unique random password per site, stored in a reputable password manager. Generate each new one with our Password Generator.
Frequently asked questions
Are online password generators safe? Our generator runs entirely in your browser using your device’s secure random number generator, so passwords are never sent to any server.
What is a passphrase? A passphrase is several unrelated words strung together (for example “violet-harbor-quokka-engine”). They are long, memorable and very hard to guess.