Random Password Generator — Strong Passwords Instantly Free
Click Generate to create a password
Password strength —
Entropy: 0 bits
Character sets
Create strong, random passwords right in your browser. Adjust the length from 4 to 128 characters and pick which character sets to include — uppercase letters, lowercase letters, numbers, and symbols. The generator uses your browser's cryptographic random number source, so every password is genuinely unpredictable. Nothing is sent to any server.
How it works
- 1 Set the password length Drag the slider or type a number between 4 and 128. Longer passwords are exponentially harder to crack — 16 characters is a solid minimum for most accounts.
- 2 Choose character sets Tick the boxes for uppercase letters (A–Z), lowercase letters (a–z), numbers (0–9), and symbols (!@#…). Including all four maximises the password's entropy.
- 3 Click Generate and copy Click Generate Password to create a new random password, then click Copy to send it straight to your clipboard. Paste it into your password manager.
Your data stays private
All processing happens entirely in your browser. No files, text, or data are ever sent to our servers. You can disconnect from the internet and this tool will still work.
Frequently asked questions
- Is the generated password truly random?
- Yes. The generator uses the Web Crypto API (crypto.getRandomValues) built into your browser. This is the same cryptographic source used by security software — not the weaker Math.random() used by many online generators.
- Is my password stored anywhere?
- No. The password is generated entirely inside your browser. No data is sent to our servers, logged, or stored. You can disconnect from the internet after the page loads and the generator still works.
- How long should my password be?
- For general accounts, 16 characters with all character sets gives over 100 bits of entropy — far beyond what any current hardware can brute-force. For very sensitive accounts like email or banking, use 20+ characters.
- What does entropy mean?
- Entropy (in bits) measures how unpredictable a password is. Each extra bit doubles the number of guesses needed to crack it. A 128-bit entropy password would take longer than the age of the universe to brute-force with today's hardware.
- Should I use symbols in my password?
- Symbols increase the character set size and therefore the entropy per character. However, some systems reject certain symbols. If a site gives you trouble, turn off symbols and compensate with a longer length.