Random Number Generator

Generate random numbers instantly — free, no sign-up required.

History

No results yet.

What is a random number generator?

A random number generator (RNG) is a tool that produces numbers with no discernible pattern or predictability. Random numbers are used for everything from school raffles and workplace draws to tabletop RPGs, statistical sampling, and social media giveaways.

There are two main types of generator:

  • True random number generators (TRNG): these use unpredictable physical phenomena — atmospheric noise, radioactive decay — as a source of entropy. The output is fundamentally unpredictable.
  • Pseudorandom number generators (PRNG): these use mathematical algorithms seeded with an initial value. Fast and sufficient for the vast majority of everyday uses, but theoretically reproducible if the seed is known.

Our tool uses your browser's crypto.getRandomValues() API — the same cryptographically secure source used for data encryption and secure tokens. Results are fully trustworthy for prize draws, sampling, and any situation demanding genuine impartiality. All computation happens in your browser: your numbers never leave your device.

How to use the random number generator

The tool is designed to be instant and friction-free:

  1. Set the range: enter your desired minimum and maximum. By default the generator draws a number between 1 and 100.
  2. Choose the quantity: need just one number, or several at once? Enter how many in the Quantity field.
  3. Allow or disallow duplicates: for a draw where each entry can only win once, untick Allow duplicates.
  4. Click Generate: your number appears instantly — no loading screens, no waiting.
  5. Copy or regenerate: copy the result to your clipboard with one click, or hit Generate Again for a fresh draw.

The other tabs offer a dice roller (D4 to D20), coin flip, and a list tool for shuffling or picking random winners from a custom list.

What can you use a random number generator for?

Far more useful than it first appears, a random number generator solves dozens of everyday situations across Australia.

Workplace raffles and Kris Kringle

The office Kris Kringle (Secret Santa) is an Australian workplace tradition. Paste all names into the List tab, shuffle, and assign picks fairly — no hat, no paper slips, no reveals until the day. The List tab also works perfectly for workplace raffle draws and team event prize giveaways.

School fetes and fundraising raffles

School fetes, P&C fundraisers, and footy club raffles are a cornerstone of Australian community life. Use the number generator to draw winning ticket numbers, or paste entrant names into the List tab for a transparent winner selection.

Social media giveaways

Instagram and TikTok giveaways are popular with Australian brands and creators. Paste all entrant names into the List tab, pick your winners with one click, and share the screenshot as proof of a fair draw in your story or WhatsApp group.

Tabletop RPGs and board games

No dice nearby? The Dice tab covers D4, D6, D8, D10, D12 and D20 — the full set for Dungeons & Dragons, Pathfinder, or any board game. Roll up to six dice simultaneously with the total calculated automatically.

Classroom decisions

Teachers use random generators to call on students, form groups, pick presentation order, or assign tasks fairly. The List tab accepts as many names as needed, picking each only once when duplicates are off.

Go to the List tab and enter all entrants' names, one per line. Select Pick N and enter the number of winners. Click Generate — winners are selected at random with no repeats. Copy the result and share it publicly as transparent proof of a fair draw.