Online Dice Roller

Which Dice Type Should You Pick?

This roller covers the full standard polyhedral set used in tabletop gaming:

• D4 — four-sided, tetrahedron. Common for dagger and dart damage in D&D.
• D6 — the classic cube. Board games (Monopoly, Catan, Yahtzee), most weapon damage dice, and general-purpose rolling.
• D8 — eight-sided. Mid-tier weapon damage (longswords, battleaxes) in D&D 5e.
• D10 — ten-sided, numbered 0–9. Used alone or paired with a second D10 to build a D100 roll.
• D12 — twelve-sided. Barbarian greataxe damage in D&D, and some tabletop wargames.
• D20 — the workhorse of d20-system RPGs: attack rolls, ability checks, saving throws. See the dedicated D20 Roller for built-in advantage/disadvantage.
• D100 — percentile die, 1–100. Used for percentage-based skill checks in systems like Call of Cthulhu.

Need a coin instead of dice for a quick yes/no call? Try the Coin Flip tool for an instant heads-or-tails decision.

Online Dice for D&D: What to Roll and When

If you are looking for an online dice roller for D&D, the buttons above already match the polyhedral set a Dungeons & Dragons table uses. Select the die from the roll you need, set the number of dice, and press the roll button. Here is how common D&D situations map onto the tool:

• Attack roll, ability check or saving throw: D20, one die. Add your modifier to the result yourself and compare it to the target number your Dungeon Master gives you.
• Advantage or disadvantage: D20, two dice. Both results are shown, so keep the higher (advantage) or the lower (disadvantage). The D20 roller picks automatically.
• Weapon damage: the die printed on your character sheet, for example D8 for a longsword or D4 for a dagger. On a critical hit, roll twice as many damage dice.
• Spell damage such as 8d6: D6, eight dice. The total appears under the results. For more than ten dice, roll in two batches and add the totals.
• Ability scores with 4d6, drop the lowest: D6, four dice. Subtract the lowest die from the total, then repeat for each ability.
• Percentile tables: D100 gives a number from 1 to 100 directly, with no need to combine two ten-sided dice.

For the reasoning behind these rolls, see D&D dice explained, and for the odds behind advantage see advantage and disadvantage.

Reading Dice Notation Like 2d6+3

Dice notation has three parts: how many dice, which die, and a fixed modifier. In 2d6+3, you roll two six-sided dice, add them up and add 3. On this page, choose D6, move the slider to 2, roll, then add the 3 in your head. Because the minimum of 2d6 is 2 and the maximum is 12, the finished result always lies between 5 and 15. The same pattern works for every roll: 1d20+5 is one twenty-sided die plus five, and 3d4+3 is the Magic Missile damage line. Note that the tool rolls one type of die at a time, so for 1d8+2d6 roll the D8 first, then the D6s, and add the totals. The roll history keeps your recent results visible while you do the sum.

How to Roll a D14, D50, D3 or Other Dice Without a Button

Some games call for dice that are not part of the standard set. You can build them from the dice above while keeping every outcome equally likely. The idea is to roll a die that is large enough and either re-roll or fold the surplus numbers:

• D14: roll the D20. If it shows 15 to 20, roll again. The results 1 to 14 are all equally likely. On average you need about 1.4 rolls (20 divided by 14).
• D7: roll the D8 and re-roll any 8.
• D5: roll the D10 and halve it, rounding up (1–2 is 1, 3–4 is 2, and so on).
• D3: roll the D6 and treat 1–2 as 1, 3–4 as 2 and 5–6 as 3.
• D50: roll the D100 and halve it, rounding up. Each result from 1 to 50 can come from exactly two D100 values.

Do not simply roll a bigger die and use "modulo" arithmetic unless the sizes divide evenly; that makes some numbers more likely than others. Re-rolling and folding avoid the problem. If you want to know how a dice type looks in real life, the dice types guide covers the standard shapes and the tabletop RPG dice guide explains what to buy.

Tips for Rolling Dice in an Online Game

When your group plays over video chat, agree on one roller everybody can trust, or let each player roll their own and announce the results in the open. Announce the die and the total, for example "D20, 14", so the Dungeon Master can apply the modifiers. Keep the page open in its own tab, and use the roll history to settle any later disagreement about a number. If your table prefers physical dice, ask before using a digital roller. Most groups are happy to allow it when someone has forgotten theirs.

D&D and RPG Dice: Notation and Advantage

Rulebooks write rolls as NdS+M: N dice with S sides, plus a modifier M. A longsword hit might be 1d8+3, a Fireball is 8d6, and a healing potion is 2d4+2. With the roller above you pick the die and the count, then add the modifier yourself. If you would rather type the whole notation, the D&D dice roller reads it directly and also handles drop-lowest rolls for ability scores (4d6, drop the lowest die).

Advantage means rolling two D20 and keeping the higher result; disadvantage keeps the lower. Because either of two dice can help you, a target of 15 or more is met 30 % of the time with one D20, 51 % with advantage and 9 % with disadvantage. The D20 roller has a mode switch for both, and the advantage and disadvantage guide has the full tables.

Are Online Dice Fair and Random?

Every die here is drawn separately from your browser's built-in random number generator, so each face has the same chance on every roll, and earlier rolls have no influence on later ones. That is a simulation of a fair die and is exactly what a game needs. Streaks are normal: with two dice you roll a double once in six rolls on average, so doubles twice in a row happens once in 36 times. The generator is not meant for gambling or security uses. To see how totals spread across many dice, read dice probability explained, and to check a physical die, see is my die fair.

Which Dice for Which Game?

Game	Dice you roll	More
Dungeons & Dragons, Pathfinder	D4 to D20, D100	D&D dice roller, dice explained
Monopoly, Catan, Backgammon	2 × D6	Board game dice
Yahtzee, dice poker, Liar's Dice	5 × D6	Yahtzee, dice poker, Liar's Dice
Farkle	6 × D6	Farkle rules
Bunco, LCR, Tenzi	3 or 10 × D6	Bunco, LCR, Tenzi
Quick yes or no	Coin	Coin flip

All rules pages are collected in the dice games and guides hub.