Developer Tools toolsUpdated July 2026

Free Random Number Generator

Generate one or many random numbers within any range, with optional uniqueness and decimals.

Free online tool No signup Live preview Browser-first privacy
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How to generate random numbers

  1. Enter a minimum and maximum value.
  2. Choose how many numbers to generate.
  3. Optionally avoid duplicates or allow decimals.
  4. Select Generate.

How uniqueness works

When "No duplicate numbers" is enabled for whole numbers, this tool builds the full list of numbers in your range, shuffles it, and takes as many as you asked for — guaranteeing no repeats as long as enough unique numbers exist in the range.

Common use cases

  • Pick a random winner from a numbered list
  • Generate a set of random test data values
  • Pick a random number for a game or raffle

Frequently asked questions

Is this tool free?

Yes. It is completely free, with no signup and no limits.

Are the numbers uploaded anywhere?

No. Numbers are generated entirely in your browser.

Can I generate more than one number at a time?

Yes. Set the count to generate up to 10,000 numbers at once.

Can I avoid duplicate numbers?

Yes, for whole numbers. Note that the number of unique values available is limited by the size of your min-max range.

Can I generate decimal numbers?

Yes. Enable the decimals option to generate numbers with two decimal places.