Free Online Generators & Calculators
Anything that needs to be genuinely unpredictable is hard to do by hand — people reuse the same passwords and pick the same "random" numbers. These generators use the browser's own randomness instead, so the password, number or pick you get is not a pattern someone can guess from your last one.
1 tool in this category. All free, no sign-up.
Start here
All calculation tools
Calculation Tools — frequently asked questions
The password generator runs in your browser and the generated password is never sent to us. It is only as safe as where you store it afterwards — put it straight into a password manager rather than a note or a spreadsheet.
The password generator draws from the browser's cryptographic random source, which is the same source web applications use for security tokens. The novelty generators are for casual use, not for anything security-critical.