calcular.eu

Random number generator

Choose the range and how many numbers you want. Great for prize draws.

How it works

Numbers are generated in your browser with its cryptographic generator (crypto.getRandomValues), the same one used to create passwords, so every value in the range is equally likely.

Without repeats, each number can only come up once: handy for draws with several prizes.

Frequently asked questions

Can anyone rig the result?

There’s no way to choose the outcome: it’s calculated on the spot on your device. For a public draw, do it live.

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