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How to use Random Number Generator

Get the best out of Random Number Generator: every option explained, a worked example, and what to check when the output is not what you expected.

Updated July 31, 2026

What it does

Instantly generate a list of random integers within a range. It runs entirely in your browser — your input never leaves your device.

Options

Every setting this tool exposes, straight from the code that validates it.

OptionTypeDefaultWhat it does
minnumber1Defaults to 1.
maxnumber100Defaults to 100.
countwhole number1How many results to produce. Accepts min 1. Defaults to 1.
allowDuplicatestrue / falsetrueDefaults to true.

Worked example

Run these settings on the tool page:

  • min: 1
  • max: 100
  • count: 1
  • allowDuplicates: true

You get:

14

Getting the result you want

Most of the control here is in the options above. If the output is not what you expected, the setting to check first is min and max — those change the shape of the output rather than the input it accepts.

Troubleshooting

  • A value is rejected. count accepts min 1. Anything outside that is refused rather than silently clamped.
  • It is slow on very large input. Everything runs in your browser, so speed depends on your device. Very large inputs are best split up, or run through the API where the work happens on our servers.

Automating it

The same logic is available as a REST endpoint, so you can run it from a script, a CI job or your own app.

Bash
curl "https://api.toolsxpo.com/v1/random-number-generator" \
  -H "Authorization: Bearer $TOOLSXPO_KEY"

It costs 1 credit per successful call. See the full endpoint reference, or try it in the playground.

Tools covered here

Random Number Generator

Math

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