Developer Tools

Random Number Generator

Generate random numbers between any range. Single or bulk, dice rolls, lottery picks, coin flips — all instant.

Runs in browserFree & no signupDice, lottery & more

Settings

Min

Max

Result

Click Generate to get a result.

How to generate random numbers

Pick a mode, set your range or parameters, and get a cryptographically random result in one click.

01
Choose a mode
Pick from Range (custom min/max), Dice (D4 to D100), Lottery (pick N numbers from a pool), or Coin Flip. Each mode is optimized for its specific use case.
02
Set your parameters
For Range mode, enter your minimum and maximum values. For Lottery mode, set how many numbers to draw and the pool size. Dice and Coin Flip need no configuration.
03
Generate your number
Click Generate (or press Enter) to get a cryptographically random result. The number appears instantly — no loading, no waiting.
04
Use Bulk mode for multiple results
Need 50 random numbers at once? Switch to Bulk mode, set the count, and generate a full list you can copy to your clipboard in one click.

What people use it for

Random numbers have more everyday uses than you might think — from picking contest winners to rolling dice online.

Giveaways & contests

Pick a random winner from a list of entries. Generate a number between 1 and the total entry count for a fair, unbiased draw.

Board games & tabletop RPG

Roll a D4, D6, D8, D10, D12, or D20 without physical dice. Perfect for online play sessions or when you've lost a die.

Lottery number picking

Generate a set of unique lottery numbers from your local game's pool — for example, 6 numbers from 1–49 for a standard lottery draw.

Statistical sampling

Generate random sample IDs, row numbers, or indices for surveys, A/B testing, or research studies that require unbiased selection.

Password & PIN seeds

Use random numbers as seeds or components when building random passwords, PINs, or security codes in your own workflow.

Decision making

Can't choose between two options? Flip a virtual coin or assign each option a number and let the generator decide for you.

Frequently asked questions

Everything you need to know about how the random number generator works.

The generator uses the browser's built-in cryptographic random number source (crypto.getRandomValues), which produces statistically unpredictable results suitable for games, giveaways, and sampling. It is not a pseudo-random algorithm seeded with a predictable value.

Yes, completely free with no limits. Generate as many numbers as you need — there's no account, no subscription, and no watermark.

The Dice mode supports D4, D6, D8, D10, D12, D20, and D100 — the standard set used in tabletop RPGs like Dungeons & Dragons.

Yes. In Range mode you can set a negative minimum value (e.g., -100 to 100) and the generator will produce numbers across that full range.

You can generate up to 10,000 numbers in a single bulk request. Results are displayed in a scrollable list and can be copied to your clipboard.

Yes. Lottery mode draws numbers without replacement, so every number in the result set is unique — just like a real lottery draw.

Yes. The tool is fully responsive and works on any modern smartphone or tablet browser.

No. All number generation happens entirely in your browser using the Web Crypto API. Nothing is sent to any server.

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How to generate random numbers

Pick a mode, set your range or parameters, and get a cryptographically random result in one click.

Choose a mode

Pick from Range (custom min/max), Dice (D4 to D100), Lottery (pick N numbers from a pool), or Coin Flip. Each mode is optimized for its specific use case.

Set your parameters

For Range mode, enter your minimum and maximum values. For Lottery mode, set how many numbers to draw and the pool size. Dice and Coin Flip need no configuration.

Generate your number

Click Generate (or press Enter) to get a cryptographically random result. The number appears instantly — no loading, no waiting.

Use Bulk mode for multiple results

Need 50 random numbers at once? Switch to Bulk mode, set the count, and generate a full list you can copy to your clipboard in one click.