Jack Tools

Random Number Generator

Generate one or more random numbers instantly.

Generator settings

Allow duplicates Turn off to generate unique results only.
Whole numbers only Turn off to allow decimal numbers.
Generated results
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Choose a range and generate numbers.
Numbers generated
0
Range size
0
Lowest result
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Highest result
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How this random number generator works

This random number generator lets you create one or more random values within a range you choose. You can set a minimum number, a maximum number, how many results you want, and whether duplicates are allowed.

It is useful for classroom activities, games, raffles, prize draws, lucky numbers, random selections, practice exercises, and quick everyday decisions.

Random results Custom range Single or multiple numbers Duplicates on/off Whole numbers or decimals

The calculator generates random values between your minimum and maximum settings. If whole-number mode is turned on, the results are integers. If it is turned off, the tool can generate decimal values instead.

How the range works

The minimum number is the lowest possible result and the maximum number is the highest possible result. Every generated value will fall inside that chosen range.

What duplicates means

If duplicates are allowed, the same number can appear more than once in the results. If duplicates are turned off, each result will be unique within the selected range.

Whole numbers and decimals

Whole-number mode is best for draws, games, and simple picks. Decimal mode is useful when you want a random value that includes fractional numbers.

When unique results matter

Unique results are useful for raffle numbers, team picks, classroom selection, and other situations where the same result should not repeat.

Example random number generator uses

Here are a few common examples showing how a random number generator can be used in everyday situations.

Example 1

Pick a number from 1 to 10

Minimum 1
Maximum 10
How many? 1
Use case Quick random choice
Example 2

Generate raffle numbers

Minimum 1
Maximum 100
Duplicates Off
Use case Unique number draw
Example 3

Classroom random picker

Minimum 1
Maximum 30
How many? 5
Use case Select students randomly
Example 4

Random decimal value

Minimum 0
Maximum 1
Whole numbers Off
Use case Generate a decimal result

Random number generator FAQs

It creates one or more random numbers within the minimum and maximum range you choose. You can also decide whether duplicates are allowed and whether results should be whole numbers or decimals.
Yes. You can choose how many numbers you want to generate, which is useful for random lists, prize draws, and multiple picks.
If duplicates are turned off, each generated result must be unique. This is especially useful for raffles, draws, and selections where repeated numbers should not appear.
Yes. If you turn off whole-number mode, the tool can generate decimal results instead of integers.
The calculator can handle that by reordering the range internally, so you still get valid results.
Yes. It is useful for simple draws, raffles, classroom picks, and casual random selection. For formal or regulated draws, you may need a process that meets specific legal or audit requirements.
It uses the browser’s built-in random generation for quick everyday use. It is suitable for normal utility purposes such as games, picks, and simple random selection.
Yes. After generating numbers, you can copy the results and paste them into documents, spreadsheets, messages, or any other tool.

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