Random Number Generator
Generate random numbers within any range. Single or bulk. Unique numbers, no repeats mode. Includes a dice roller with D4 through D100.
How to use the Random Number Generator
Single or multiple numbers
Generate one random number within any range you set. Enable "Multiple numbers" mode to generate a list — useful for lottery picks, raffle draws or random sampling. The "No repeats" option ensures each number only appears once.
Dice roller
Click any dice type (D4 through D100) for a quick roll. Adjust the number of dice to roll multiple at once — total shown below. Enter a custom number of sides for any non-standard dice. Previous results build up as chips on screen.
True randomness can't be produced by software alone — only pseudo-random sequences. Modern operating systems mix in 'entropy' from mouse movement, keyboard timings, and hardware noise. The Linux /dev/random pool draws on ~13 different entropy sources.
Frequently asked questions
Is the Random Number Generator free to use?
Yes, the Random Number Generator is completely free. There is no sign-up, no account required, and no limit on how often you can use it.
How accurate is the Random Number Generator?
The Random Number Generator uses standard mathematical formulas and produces results accurate to standard precision. For critical applications, always verify with an authoritative source.
What devices does the Random Number Generator work on?
The Random Number Generator works on any device with a modern web browser — desktop, laptop, tablet, or phone. It is mobile-friendly and works offline once the page has loaded.