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Random number generator

World's simplest randomization tool

Free online random number generator. Just press a button and get your random number. There are no ads, popups or nonsense, just a random number generator. Press a button, get a random number. Created by developers for developers.
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Range Options
Start at this number
End at this number
How many numbers to generate?
Number Options
How many digits in fraction?
Random number generator tool What is a random number generator?
This tool generates random numbers. It lets you set the number range, including negative numbers, and you can choose how many numbers to generate.
Random number generator examples Click to use
Generate numbers in range -100 to 100
This example generates 10 random numbers in range -100 to 100.
Required options
These options will be used automatically if you select this example.
Start at this number
End at this number
How many numbers to generate?
Generate binary choices 0 and 1
This example generates 15 random binary numbers that are only zero and one.
Required options
These options will be used automatically if you select this example.
Start at this number
End at this number
How many numbers to generate?
Generate fractional numbers
This example generates 8 fractional numbers between -1 and 1.
Required options
These options will be used automatically if you select this example.
Start at this number
End at this number
How many numbers to generate?
Pro tips Master online randomization 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://onlinerandomtools.com/generate-random-numbers?&range-start=-100&range-end=100&count=10&whole-nums=true
All randomization tools
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Quickly generate random JSON data structures.
Quickly generate random XML documents.
Quickly generate random CSV files.
Quickly generate random TSV files.
Quickly generate random bitmap images.
Quickly generate random data that matches the given regular expression.
Quickly generate random passwords.
Quickly generate random strings.
Quickly generate random numbers.
Quickly generate random integers.
Quickly generate random fractions.
Quickly generate a sequence of increasing or decreasing random integers.
Quickly generate random primes.
Quickly generate random binary numbers.
Quickly generate random octal numbers.
Quickly generate random decimal numbers.
Quickly generate random hexadecimal numbers.
Quickly generate random bytes.
Quickly generate random calendar dates.
Quickly generate random clock times.
Quickly generate random IPs.
Quickly generate random MAC addresses.
Quickly generate random UUIDs.
Quickly generate random GUIDs.
Randomly pick an item from many items.
Randomly shuffle text lines and rearrange their order.
Randomly shuffle the order of all words in a string, sentence, or text.
Randomly shuffle the order of letters in a string, sentence, or text.
Coming soon These randomization tools are on the way
Generate Random YAML
Generate random YAML markup.
Generate Random Pin Numbers
Generate a random pin number of any length.
Generate Random HTML
Generate random HTML code and HTML web pages.
Generate Random Text Files
Generate random plain text files.
Generate Random Binary Files
Generate random binary files.
Generate Random UTF8
Generate random UTF8 characters.
Generate Random HTML Tables
Generate random HTML tables with random values.
Generate Random LaTeX
Generate random LaTeX documents.
Generate Random Images
Generate random PNG/GIF/JPG/WEBP/BMP images.
Generate Random Audio
Generate random MP3 and WAV music files.
Generate Random Video
Generate random MP4 and AVI videos.
Generate Random Excel
Generate random Excel spreasheets.
Generate Random RegExps
Generate random valid regular expressions.
Generate Random Words
Generate random English words.
Generate Random Sentences
Generate random English sentences.
Generate Random URLs
Generate random web URLs.
Generate Random Emails
Generate random email addresses.
Generate Random Colors
Generate a random set of colors.
Generate Random MD5 Hash
Generate random MD5 hash digests.
Generate Random SHA1 Hash
Generate random SHA1 hash digests.
Generate Random SHA2 Hash
Generate random SHA2 hash digests.
Generate Random URL-encoded data
Generate random percent-escaped URL data.
Generate Random Base64-encoded data
Generate random base64 data.
Randomize Character Case
Randomly change character case in text.
Shuffle Sentences
Randomly shuffle the order of sentences in text.