True Random Number Service

Advisory: RANDOM.ORG will be down for a scheduled system upgrade on Sunday, 22 November 2009

Third-Party Draw Service

The Third-Party Draw Service is useful for people who operate raffles, sweepstakes, promotional giveaways and other lottery type services professionally. In a similar fashion to a certified official, RANDOM.ORG acts as an unbiased third party who conducts the drawings in a manner that is guaranteed to be fair and truly random. The drawings are made using true randomness that comes from atmospheric noise, which for many purposes is better than the pseudo-random number algorithms typically used in computer programs.

Already have an account? Please login to use the service.

Here is how it works:

You register for a RANDOM.ORG account with at least $4.95 worth of prepaid credit. (PayPal accepted.)
You login to RANDOM.ORG and upload a list of entrant identifiers, such as email addresses or Twitter IDs. (These are not published on the web and never shared with anyone.)
You select the number of winners.
RANDOM.ORG picks the winner(s) using true randomness, makes a record of the drawing on the RANDOM.ORG site, sends you an email confirmation and finally debits your prepaid credit for the drawing cost. (Check out the full pricing details.)
Winners and losers in your drawing can go to RANDOM.ORG and verify the result for at least five years. (We have a clever way of doing that without revealing people's email addresses or Twitter IDs.) You can also keep the record private if you prefer.

Sounds easy? It really is. Check out the Video Guide to see it in action.

Please keep in mind the terms and conditions for this service.