Secure Password Generator Online — Free, No Sign-up
Create strong, unique passwords instantly. Configure length, uppercase, lowercase, numbers and symbols. Your password is generated entirely in your browser — we never see or store it. Ideal for protecting your online accounts.
✦ Local AI · No storage · No sign-up · Free
Last updated: September 22, 2026
✦ Resultado generado con IA
How it works
A password's security depends on two factors: its entropy (how many possible combinations exist) and how unpredictable the method that generated it is. A 12-character password chosen "randomly" by a person (like swapping letters for numbers, "P4ssw0rd!") has much less real entropy than it looks like, because it follows patterns that attack dictionaries already know.
This generator builds the password character by character using crypto.getRandomValues(), choosing each position independently and uniformly from the character set you configure (uppercase, lowercase, numbers, symbols). There's no pattern, no base word, no predictable substitution — every generated password is statistically indistinguishable from pure noise.
Neither the generated password nor the configuration you used is sent to any server: the whole process runs in your own browser's JavaScript engine. That's different from many online generators that do make a server request to "personalize" or log usage — an unnecessary risk when credentials are involved.
Possible combinations by length (94 printable characters)
| 8 characters | ≈6.1 × 10¹⁵ |
| 12 characters | ≈4.8 × 10²³ |
| 16 characters | ≈3.7 × 10³¹ |
| 20 characters | ≈2.9 × 10³⁹ |
What is it for?
- ✓Creating new passwords for online accounts and services
- ✓Generating WiFi network passwords
- ✓Passwords for banking or other sensitive accounts
- ✓Generating API keys and secure tokens for development
- ✓Teaching good security practices in workshops or classes
- ✓Replacing reused or breached passwords from data leaks
- ✓Creating master passwords for password managers
- ✓Generating temporary credentials for software testing
Frequently asked questions
- How do I generate a secure password?
- Use at least 12 characters and include uppercase, lowercase, numbers and symbols. Our generator does this automatically and cryptographically at random.
- Is my generated password saved anywhere?
- No. Generation happens 100% in your browser using crypto.getRandomValues(). Neither we nor anyone else can see your password — no network request transmits it.
- What password length is recommended?
- For important accounts (bank, primary email, password manager), use 16 characters or more. For basic accounts, 12 characters with all character types is a reasonable minimum in 2026.
- Are the generated passwords secure?
- Yes. We use the browser's Web Crypto API, which generates cryptographically secure values impossible to predict, unlike "memorable" patterns attackers already know.
- Why shouldn't I invent my own "random" password?
- Humans are bad at generating real randomness: we tend to repeat patterns (swap "a" for "@", start with a capital letter, end with a number). Password-cracking algorithms specifically exploit those predictable patterns.
- Should I use a different password for every account?
- Yes, always. Reusing passwords means a single data breach compromises every account that uses it. Generate a unique password per service and store them in a password manager.