Free Random Number Generator

Use this free random number generator to generate one or more random whole numbers instantly. Choose a minimum number, maximum number, how many numbers to generate and whether duplicates are allowed.

This tool is useful for giveaways, classroom activities, games, sampling, quick decisions and everyday number picking.

What is a random number generator?

A random number generator is a tool that produces numbers chosen at random from within a selected range.

For example, if you choose a minimum of 1 and a maximum of 10, the generator can return any whole number from 1 to 10.

Random number generators are commonly used for:

• picking winners
• drawing lots
• choosing numbers for games
• classroom tasks
• creating sample data
• making fair random selections

How this random number generator works

This calculator generates whole numbers between your selected minimum and maximum values.

You can choose:

• the minimum number
• the maximum number
• how many numbers to generate
• whether duplicates are allowed

If duplicates are turned off, the same number will not appear more than once in the result.

How to use this free random number generator

1. Enter a minimum number.
2. Enter a maximum number.
3. Enter how many numbers you want to generate.
4. Choose whether to allow duplicates.
5. Click Generate.

Use the Reset button to clear the settings and start again.

Examples

Example 1: Generate one random number

If you choose:

• minimum = 1
• maximum = 100
• quantity = 1

The generator might return:
57

Example 2: Generate multiple numbers without duplicates

If you choose:

• minimum = 1
• maximum = 10
• quantity = 5
• duplicates = off

The generator might return:
3, 7, 1, 10, 5

Each number appears only once.

Example 3: Generate multiple numbers with duplicates

If you choose:

• minimum = 1
• maximum = 6
• quantity = 8
• duplicates = on

The generator might return:
2, 6, 2, 1, 4, 5, 6, 3

Some numbers may repeat.

When to use a random number generator

A random number generator can be useful when you need a fair and simple random selection.

Common uses include:

• picking competition winners
• assigning turn order
• choosing raffle numbers
• selecting students at random
• generating game numbers
• creating simple test datasets

Can random numbers repeat?

Yes, random numbers can repeat if duplicates are allowed.

If you switch duplicates off, each generated number will be unique, as long as the quantity requested does not exceed the size of the range.

For example:

• range 1 to 5
• quantity 5
• duplicates off

This is possible, because there are exactly 5 unique numbers in that range.

But:

• range 1 to 5
• quantity 6
• duplicates off

This is not possible, because there are not enough unique numbers available.

Is this random number generator really random?

For normal everyday use, this tool provides a practical random result suitable for games, classroom activities, simple selections and general website use.

It is not designed as a cryptographic or security-grade random number generator.

Whole numbers only

This version of the calculator generates whole numbers only. That makes it ideal for:

• integer ranges
• giveaways
• raffles
• classroom number picks
• simple random selections

Frequently asked questions

How do I generate a random number between two numbers?

Enter your minimum and maximum values, then click Generate. The tool will return a random whole number within that range.

Can I generate more than one random number?

Yes. Enter the number of results you want in the quantity field.

Can the same number appear twice?

Yes, if duplicates are allowed. If duplicates are turned off, each number will be unique.

What happens if I ask for too many unique numbers?

The generator will show an error if you request more unique numbers than exist in the chosen range.

Does this generator work with negative numbers?

Yes. You can use negative whole numbers as long as the minimum is less than or equal to the maximum.

Does this tool generate decimal numbers?

No. This version is for whole numbers only.

Try our other calculators below:
Fraction to Decimal
Square Root
Average
Mean/Median/Mode