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D&D Dice Roller
Type any roll in dice notation, such as 1d20+5 for an attack or 8d6 for a fireball, or use the quick buttons for advantage, disadvantage and ability scores.
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Notation: 2d6 two six-sided dice · +3 modifier · kh1/kl1 keep highest/lowest · dl1 drop lowest · d% = d100. Dropped dice are faded.
Also try the Coin Flip, the Random Number Generator or Sudoku.
About the Dice Roller
Roll virtual dice for board games, tabletop role-playing games and classroom probability. Pick the die (d4, d6, d8, d10, d12, d20 or d100), how many to roll and a modifier, or type dice notation for anything else, including keep highest and drop lowest. Each die is rolled with your browser’s secure random number generator, so every face is equally likely. Your last 15 rolls are kept in your browser.
How to use it
- 1 Pick a die and how many to roll, or type dice notation.
- 2 Add a modifier if you need one.
- 3 Press Roll, or press the space bar.
- 4 Read each die and the total; your last rolls are listed below.
Frequently asked questions
How do I roll with advantage?
Press “Advantage” (2d20kh1): it rolls two d20s and keeps the higher. Disadvantage (2d20kl1) keeps the lower. Advantage raises your average from 10.5 to about 13.8.
How do I roll ability scores?
Press “Ability score” (4d6dl1): roll four d6 and drop the lowest. Roll it six times for a full set. The average is about 12.2.
What does 2d6+3 mean?
Roll two six-sided dice and add 3. The first number is how many dice, the number after “d” is how many sides, and + or − adds a modifier. You can combine terms, such as 1d8+1d6+2.
Are online dice fair?
These are. Each die uses crypto.getRandomValues with rejection sampling, so every face has exactly the same chance. Physical dice are often slightly unbalanced by their pips or rounded edges.
What dice notation can I use?
NdS rolls N dice with S sides (2d6, d20, d% for d100). Add or subtract numbers and other dice (1d8+1d6+2). Add kh or kl to keep the highest or lowest dice (2d20kh1), or dl and dh to drop them (4d6dl1).
What is the average roll of a die?
Half of the sides plus one: 2.5 for a d4, 3.5 for a d6, 4.5 for a d8, 5.5 for a d10, 6.5 for a d12, 10.5 for a d20 and 50.5 for a d100.
How many dice can I roll at once?
Up to 10 dice with the quick roller, and up to 100 dice in one notation roll.
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