# Random number generator

## World's simplest math tool

World's simplest browser-based random number generator. Just load this tool and you will instantly get a bunch of random numbers. Or you can just press a button and get more random numbers. Free, quick, and very powerful. Created by mathematicians for mathematicians.

A link to this tool, including input, options and all chained tools.

Can't convert.

Random number generator tool
What is a random number generator?

This tool creates random numbers. In the options, you can set the minimum and maximum value for your random numbers. You can also specify how many random numbers to generate and change the separator between them. Also, you can generate fractions and specify the number of digits after the decimal point. Mathabulous!

Random number generator examples
Click to use

Generate Negative Random Whole Numbers

This example generates 15 negative random numbers between -1000 and -100.

-552
-939
-374
-584
-728
-312
-677
-154
-421
-506
-297
-192
-151
-355
-726

**Required options**

Start range with this number.

End range with this number.

How many random numbers
to create?

Separator between numbers.
(Newline by default.)

Generate Random Numbers With a Custom Separator

This example generates 50 random numbers in the range -500 to 500 and sets separator between them to a semicolon.

**Required options**

Start range with this number.

End range with this number.

How many random numbers
to create?

Separator between numbers.
(Newline by default.)

Generate Random Fractions

This example creates 10 fractional numbers between -10 and 10 with 10 digits after the decimal point.

**Required options**

Start range with this number.

End range with this number.

How many random numbers
to create?

Separator between numbers.
(Newline by default.)

How many digits after the
decimal point?

Pro tips
Master online math tools

You can pass options to this tool using their codes as query arguments and it will automatically compute output. To get the code of an option, just hover over its icon. Here's how to type it in your browser's address bar. Click to try!

https://onlinemathtools.com/generate-random-numbers?&range-start=-1000&range-end=-100&count=15&separator=%5Cn&whole-nums=true

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