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Random Number Generator

Generate random numbers within a range you set, roll dice, or flip a coin — with an option to avoid repeats.

How to use the Random Number Generator

  1. Set the minimum and maximum of your range.
  2. Choose how many numbers you need and whether repeats are allowed.
  3. Generate and copy the results.

About the Random Number Generator

The no-repeats option matters for draws and lotteries, where drawing the same number twice defeats the purpose. Dice and coin modes are there for when you need one and do not have one to hand. This is a pseudorandom generator suitable for games, sampling and casual draws, not for cryptographic key material.

Frequently asked questions

Can I generate numbers without repeats?

Yes, enable the no-repeats option so each number appears at most once in a set.

Is it suitable for a lottery draw?

It is fine for casual draws and games. Formal prize draws usually require an audited process.

Can I roll dice or flip a coin?

Yes, both modes are built in alongside the number range generator.

Can I use it as a picker for a draw?

Yes. Set the range, choose how many numbers you want and whether repeats are allowed, and it acts as a fair picker for a raffle, a team draw or a lottery-style pick. It uses the browser's cryptographic random source, not a predictable sequence.

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Runs entirely in your browser — nothing you enter is uploaded. Last reviewed and updated .

The Tools Guru Editorial Team

Three front-end engineers and technical writers in Punjab, Pakistan, shipping browser software since 2011. Every formula on this site is implemented from a primary source and checked against an independent reference implementation before release — see our editorial policy. Spotted a wrong number? Tell us and we will reproduce it, usually the same working day.

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