Dice Roller
Choose the number and type of dice, add a bonus or penalty, and roll. Your last twenty rolls stay in the history.
Ce contenu est en anglais.
Roll history
Exemples détaillés
Two dice with a bonus
Notation 2d6+3
Two dice rolled, with the total equal to their sum plus 3. The result is random, so it lies between 5 and 15.
A modifier of +3 adds three to the total, so the lowest possible roll is 5 and the highest is 15.
Rolling a single twenty-sided die
Notation 1d20
One die with 20 faces rolled, showing a number from 1 to 20. The result is random.
Each face has an equal chance of landing up, and the roll history keeps the last twenty rolls.
À propos de Dice Roller
A dice roller lets you roll the dice used in board games and tabletop role-playing without needing a box of them. Choose the type of die, from a four-sided die up to a hundred-sided one, pick how many to roll and add any modifier. The tool shows each face that came up, the sum and the final total. Every face has an equal chance on every roll, which keeps the results fair for games, for teaching probability and for deciding a random outcome.
Notation such as 2d6+3 means roll two six-sided dice and add three. The roll history keeps your last twenty rolls with their notation, so you can look back at a result or compare several rolls in a row. A modifier can be positive or negative, from minus 99 to plus 99. The standard dice used in many games are d4, d6, d8, d10, d12 and d20. The d100 die is a handy stand-in for a percentage roll, where every result from one to one hundred is equally likely.
Comment utiliser Dice Roller
- Enter how many dice you want to roll, from one to twenty.
- Choose the type of die you need, such as d6 or d20.
- Enter a modifier if your game adds or subtracts a fixed number.
- Select Roll dice, then check the faces and the total. The history keeps your recent rolls.
Usages courants
- Rolling for characters and combat in tabletop role-playing games
- Playing board games that call for dice you do not have to hand
- Teaching probability and how the spread of totals changes with more dice
- Making a random choice, such as a percentage roll for an event
Questions fréquentes
What does d20 mean?
The letter d stands for die, and the number after it is how many faces the die has. A d20 is a twenty-sided die with results from one to twenty, and a d6 is a six-sided die with results from one to six. The number in front of the d is how many dice to roll together, so 3d6 means three six-sided dice rolled and added up into one total.
How is the total worked out?
The tool adds up the face of each die to make the sum, then adds the modifier to reach the total. A modifier of plus two raises the total by two, and minus two lowers it. For example, rolling a 4 and a 5 with a modifier of minus one gives a sum of nine and a total of eight. Both the sum and the total are shown, so you can check the working.
Can I roll different types of dice together?
Not in one roll. This tool uses one type of die for each roll, so for a mixed roll such as a d8 and a d6 you can roll each type separately and add the totals by hand. The history records each roll with its notation, which is handy when a game needs several rolls in sequence and you want to keep track of them.
Is the history kept after I close the page?
No. The history lasts only while this page stays open, so refreshing or closing the page clears it. Use the clear history button to empty it at any time without rolling. If you need to keep a result for later, write it down before you leave the page, because it will not be there when you come back.
Are the rolls fair?
Each face has the same chance of coming up, and each roll is independent of the ones before it. Dice are drawn from a high-quality random source, and any draw that would favour one face is thrown away and drawn again. Over many rolls the faces tend to appear in roughly equal numbers, although short runs of the same number can look lopsided.