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Random Generators

Fair random picks for games, classrooms and giveaways: numbers in any range, with or without repeats, drawn on your own device.

2 calculators

Random picks are easy to get subtly wrong: some quick methods make low numbers slightly more likely, and “no repeats” is easy to forget. These generators handle both and show the odds.

Which generator to use

Odds at a glance

Every value in a range has the same chance, 1 divided by the number of values. Sets are rarer: six numbers out of 49 is a 1 in 13,983,816 chance. For working with the percentages yourself, use the percentage calculator.

Frequently asked questions

Are the generators fair?

Yes. They use the browser's cryptographic random source and rejection sampling, so every possible value has exactly the same chance.

Do the draws leave my device?

No. Numbers are made in your browser when you press Generate; share links keep only the settings.

Can I use them for an official lottery or contest?

They are fine for games and informal giveaways. Regulated drawings use certified equipment and witnessed procedures.