Random Number Generator

Set your range, click Generate, get a random number. Free, instant, no sign-up.

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What is a random number generator?

A random number generator picks a number within a range you define. Set a minimum, set a maximum, and click Generate — the result is calculated instantly in your browser using a statistically uniform distribution.

This tool also supports generating multiple numbers at once and a no-duplicates mode, making it useful for lotteries, games, classroom activities, and any situation where you need fair, unbiased random numbers.

How to use this random number generator

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Set your Min and Max values — the default range is 1 to 100

2

Choose how many numbers to generate (1–10) using the - and + buttons

3

Enable "No duplicates" if you need all results to be unique

4

Click Generate — your random number appears instantly

Your last 5 results are saved as history so you can compare across multiple generations.

When should you use a random number generator?

Random numbers are useful in any situation where you need an unbiased, unpredictable result:

  • Picking a lottery or raffle number fairly
  • Deciding who goes first in a game or competition
  • Generating random data for testing or development
  • Classroom activities — randomly selecting a student or group number
  • Tabletop games that need custom dice ranges
  • Choosing a random date, ID, or selection from a numbered list

Is the result truly random?

Yes. Numbers are generated using JavaScript's Math.random() — a pseudo-random number generator built into every modern browser. It produces values with a uniform distribution, meaning every number in your range has exactly the same probability of being chosen.

No server is involved, no results are stored, and previous generations have zero effect on future ones. Each click is a completely fresh, independent draw.

Frequently Asked Questions

A free online random number generator that instantly picks a random number within any range you set — no sign-up required.

Yes, you can generate up to 10 random numbers at once, with an option to ensure no duplicates.

You can set any minimum and maximum value. The default range is 1 to 100.

Yes. Numbers are generated using JavaScript's Math.random() function directly in your browser. Each result is independent — previous results have no effect on future ones.

Yes. Completely free with no sign-up, no account, and no limits on how many times you generate.

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Generate a random number — instantly and for free

Set your range, choose how many numbers you need, and get a fair result in one click. Works on desktop, tablet, and mobile.