Strong password generator
Generate strong, random passwords in your browser. Nothing is sent anywhere. From the makers of Centilio Vault.
Standalone utility · no account connection · inputs stay on this device. JavaScript is required for calculations and file processing.
Characters are drawn from your selected pool; each group is not guaranteed to appear. Nothing is sent or stored. Copied passwords remain on your clipboard until you replace them.
- Entropy
- 0 bits
- Strength
- –
Random-choice estimate, not a cracking-time guarantee. Longer unique secrets are better.
Choose Generate. Nothing is generated or saved automatically.
About this tool
Generate an 8–64 character random password or a dictionary-word passphrase. Random choices use your browser’s cryptographic source with rejection sampling; nothing is uploaded or saved.
Entropy estimates describe this generator’s random choices, not a guarantee of account security or a predicted cracking time. Use a long unique password and store it in a password manager.
Questions
Is this generator safe to use?
Yes. It runs in your browser using crypto.getRandomValues, nothing is sent to any server, and we do not log anything.
Password or passphrase?
Use a passphrase when you need to type by hand, or a random password for a password manager. The number of words and size of the word list affect strength; a short passphrase is not equivalent to a 20-character password.
Where should I keep the passwords?
In a password manager with encryption and sharing by role. Centilio Vault is zero-knowledge and free to start.