Dice Roller
Roll any dice online — D4, D6, D8, D10, D12, D20, D100. Multiple dice, modifiers, history.
Number of Dice
×
Die Sides
+
Modifier
6
6
Roll result
Standard Dice Reference
Tabletop RPGs and board games use a standard set of polyhedral dice. The D6 is the classic six-sided cube used in most board games. The D20 is the centerpiece of D&D — used for attack rolls, ability checks, and saving throws. The D100 (percentile) is two D10s rolled together to give 1–100.
This dice roller generates cryptographically random numbers using the browser's Math.random() function, giving each face an equal probability. For true cryptographic randomness, use the Web Crypto API — this tool prioritizes speed and simplicity for gaming use.
Frequently Asked Questions
A D20 is a 20-sided die, the core die of D&D. Roll it for attacks, ability checks, and saving throws. A 20 = critical hit. A 1 = critical fail (natural 1).
D&D uses 7 dice: D4, D6, D8, D10, D12, D20, and D100. The D20 is most common. Damage depends on weapon — a dagger does 1D4, a shortsword 1D6, a greatsword 2D6.
Roll 2 D20s and take the higher (advantage) or lower (disadvantage) result. Set "Number of Dice" to 2 and use D20 to simulate this.
A modifier is added to the dice total. 1D20+5 means roll one D20 and add 5. In D&D, modifiers come from your ability scores (+3 Strength means +3 to attack rolls using that weapon).