Random Number Calculator

Generate unbiased random numbers within your specified range.

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Quick Tip

Enter the lowest number you want to allow.

About This Tool

Why use Random Number?

Set a minimum and maximum and generate a random whole number in that range, with both ends included. Every value in the range has the same chance of appearing, and results are independent: the same number can come up twice in a row, which is exactly what randomness looks like.

This uses the browser's standard pseudo-random generator, which is right for draws, games, sampling and picking a winner. It is not intended for passwords or security keys — for those, use the password generator, which draws on the browser's cryptographic random source.

Key Benefits

Both ends included

A range of 1 to 100 can return 1 and 100, which is what most draws expect.

Uniform distribution

Every value in the range is equally likely; nothing is weighted towards the middle.

Runs in your browser

No server involved, so the result cannot be influenced or logged elsewhere.

How to use Random Number

1
Enter the lowest number you want to allow.
2
Enter the highest number; it is included in the range.
3
Generate a number, and generate again for another draw.
4
For a prize draw, note each result as you go, since values can repeat.

Best use cases

Pick a winner from numbered entries.

Choose a random sample for a survey or an audit.

Decide a turn order or a team split.

Generate test data for a quick experiment.

Random Number FAQs

Are the numbers truly random?

They come from the browser's pseudo-random generator, which is statistically uniform and unpredictable in practice for games, draws and sampling. It is not designed for cryptographic use.