Random Number Generator

How to Use the Random Number Generator

1. For a single random number, set the MIN and MAX values and click "Generate".
2. Click the large number display to quickly generate another random number.
3. For multiple numbers, set MIN, MAX, COUNT, and optionally enable "No Duplicates", then click "Generate List".
4. Use the Dice Roller section to roll standard gaming dice (D4 through D100).
5. Click "Copy" or "Copy List" to copy results to your clipboard.

Technical Overview & Use Cases

This tool uses JavaScript's Math.random() with Fisher-Yates shuffle algorithm for generating unbiased random numbers. It supports single number generation, batch list creation with optional duplicate prevention, and standard polyhedral dice rolls — all computed instantly in your browser.

• Gaming & Tabletop RPGs: Roll virtual dice for tabletop games, board games, or any scenario requiring random dice outcomes from D4 to D100.
• Lotteries & Drawings: Generate unique random numbers for raffle draws, lottery picks, or random selection processes with the no-duplicates option.
• Education & Statistics: Create random datasets for math exercises, probability experiments, or statistical sampling demonstrations.

Privacy & Security Guarantee

This tool is part of the FAK LAB ecosystem, founded by Faizan Ahmad Khan Khichi. All random number generation happens 100% client-side in your browser — no data is sent to any server. Your generated numbers, ranges, and settings are never stored, logged, or transmitted anywhere.

Frequently Asked Questions

Are the generated numbers truly random?

The tool uses JavaScript's built-in pseudo-random number generator (PRNG), which provides statistically uniform distribution suitable for games, drawings, and general use. For cryptographic purposes, a dedicated CSPRNG should be used instead.

What is the maximum range I can use?

You can set any integer range from negative to positive values. For list generation, you can create up to 1,000 numbers at once. The "No Duplicates" option requires the range to be at least as large as the count.

Can I generate numbers without repeats?

Yes! Enable the "No Duplicates" checkbox in the multiple numbers section. The tool uses a Fisher-Yates shuffle algorithm to ensure each number appears exactly once in the output.