Security matters, so the generation happens on your device using the browser's cryptographic random number generator where available. Nothing is sent to a server and nothing is logged. For the strongest practical protection, use at least 16 characters, enable every character class, and store the result in a password manager rather than reusing it across sites.
Calculator
How to use the Password Generator
- Drag the slider to set the password length (16 or more is recommended).
- Tick the character sets you want to include.
- Choose how many passwords to generate at once.
- Press Generate, check the strength, then copy the one you want.
About this tool
The Password Generator is built for speed and accuracy: every calculation runs in your browser, so your data never leaves your device and the result updates as you type. It works equally well on a phone, a tablet or a desktop, and it is free to use as many times as you like.
Common use cases
- Creating a unique password for every new account.
- Generating API keys or shared secrets for testing.
- Replacing weak passwords during a security review.
- Building passphrases for encrypted archives.
Tips for the best result
- Use the latest figures you have - even a small change in rate or term can shift the outcome by hundreds.
- For annual figures, divide by 12 to get a monthly number you can compare with the result.
- Bookmark this page and revisit the calculation as the inputs change.
Frequently asked questions
Is my password sent anywhere?
No. Generation and display happen entirely in your browser; the page makes no network request with your password.
How long should a password be?
Length beats complexity. Aim for at least 16 random characters, or use a passphrase of five or more unrelated words.
What does the entropy number mean?
It is an estimate of the number of bits of randomness in the password. Above roughly 70 bits is strong against offline guessing for most accounts.
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