Dice Roller and Coin Flip
Choose what to roll and how many, then press Roll. Every result is generated fresh in your browser, and every face has exactly the same chance.
Type a number and the answer appears straight away.
The math behind it: Dice Roller and Coin Flip
expected average of one die = (number of sides + 1) / 2
A six-sided die averages 3.5 over many rolls. With two dice, 7 is the most likely total, coming up one time in six, because more combinations add up to 7 than to any other number. Coin flips are a straight 50/50 each time, whatever came before.
Common questions
What is the most common roll with two dice?
7. Six of the 36 possible combinations add up to 7, a chance of 16.67%. Totals of 2 and 12 are the rarest, at 2.78% each.
Is an online dice roller really random?
This one uses your browser's cryptographic random number generator, the same source used for security keys, so the results cannot be predicted and every face is equally likely.
If I flip heads five times in a row, is tails more likely next?
No. Each flip is independent, so the chance is still 50%. Believing otherwise is known as the gambler's fallacy.
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