Random Number Generator

Can I generate numbers without duplicates?

Yes. Turn on the no-duplicates option and no value will appear twice, which is what you want for a prize draw or for splitting people into teams. The range has to be wider than the count — you cannot draw 20 unique numbers from 1 to 10.

How many numbers can I generate at once?

Up to 1,000. The page previews the first 100, and the Excel or TXT download contains the full list.

Can I set my own range?

Enter any minimum and maximum and only whole numbers between them are drawn, both ends included. For a lottery-style draw, set 1 and 45, ask for 6 numbers and switch on no duplicates.

Is it fair enough for a real prize draw?

It uses the browser cryptographic generator (crypto.getRandomValues) and discards the values that would skew the modulo, so every number in the range is equally likely — unlike the predictable pseudo-random numbers behind a spreadsheet RAND function. Nothing is stored anywhere, so record your screen or save the Excel file if the draw needs to be auditable.

Can it generate letters or passwords too?

Switch the type to letters, or letters plus digits. Length goes up to 64 characters and you can pick lowercase, uppercase or mixed, which makes it usable for temporary passwords and coupon codes.