How the dice roller works
For every die the roller picks a whole number from 1 up to the number of sides. It uses your browser's random number generator and avoids a bias towards lower numbers. The total is the sum of all dice.
Lowest total = number of dice
Highest total = number of dice × sides
Average total = number of dice × (sides + 1) / 2
Worked example
You roll 2 six-sided dice (2 × d6).
- The lowest total is 2 (two ones) and the highest is 12 (two sixes).
- The average total is 2 × (6 + 1) / 2 = 7.
- There are 6 × 6 = 36 equally likely combinations. Six of them add up to 7, so a 7 has a chance of 6 in 36, about 16.7%.
Good to know
- Past rolls do not influence the next one. A number that has not come up for a while is not "due".
- A d10 gives 1 to 10 here, and a d100 gives 1 to 100.
- Rolls are not saved. Reloading the page starts again.
Amounts are rounded for display only; the calculation itself is not rounded. Results are estimates for information, not financial advice. Last updated: 12 November 2026.
Frequently asked questions
Are the rolls really random?
Each die is rolled separately with the random number generator built into your browser. Every face has exactly the same chance, and one roll does not affect the next.
What does d6 or d20 mean?
The number after the d is how many sides the die has. A d6 is a normal six-sided die, a d20 has twenty sides. Two d6 means two six-sided dice.
What is the chance of a certain total?
With one die every face is equally likely. With two or more dice, middle totals are more likely than the extremes. With two six-sided dice, 6 of the 36 equally likely combinations add up to 7 (about 16.7%), while 2 and 12 each come up in only 1 of 36 (about 2.8%).
What is the average roll?
For one die with s sides it is (s + 1) / 2. For n dice it is n × (s + 1) / 2. Two six-sided dice average 7.
Can I use it for board games or role-playing games?
Yes. Choose the number of dice and the type, for example 1 × d20 or 4 × d6, and press Roll. You see each die and the total.