Dice Roller

Choose a die type, enter how many dice to roll, add an optional modifier, and select Roll dice. The tool displays every individual die, their subtotal, the modifier, and the final total.

Supported dice include the d4, d6, d8, d10, d12, d20, and d100. You can roll between 1 and 20 dice of the selected type in a single action.

Select Roll dice again for a new result. When you are not editing a field or using another control, you can also press Space or Enter to roll.

Tabletop dice are commonly written using the letter d. The number before the d tells you how many dice to roll, and the number after it tells you how many sides each die has.

For example, 2d6 means roll two six-sided dice. 1d20 means roll one twenty-sided die. A signed number after the dice is a modifier, so 3d8 + 5 means roll three eight-sided dice, add their results, and then add 5.

This roller uses separate controls rather than a notation field. To roll 3d8 + 5, select d8, set Dice count to 3, and set Modifier to 5.

The individual rolls show the result of every die. If you roll 3d6 and receive 2, 5, and 6, those three numbers are the raw dice results.

The subtotal is the sum of the individual dice. In that example, the subtotal is 13.

The modifier is added to or subtracted from the subtotal once. With a +4 modifier, the final total is 17. With a -3 modifier, the final total is 10.

A modifier changes the final total but does not change the possible face results of the dice themselves.

The lowest possible subtotal equals the number of dice because the minimum result on each supported die is 1. The highest possible subtotal equals the number of dice multiplied by the number of sides.

For example, 3d8 has a minimum subtotal of 3 and a maximum subtotal of 24. Adding a +5 modifier changes the possible final-total range to 8 through 29.

Negative modifiers can make the final total lower than the minimum face value and can even produce a total of zero or below. The individual dice still remain within their normal 1-to-sides range.

Every face of one fair die has the same individual chance. On a d20, each number from 1 through 20 has a 1-in-20 chance, or 5 percent.

The totals of several dice are not usually equally likely. With 2d6, there is only one combination that totals 2 and one that totals 12, but six combinations total 7.

This makes middle totals more common than extreme totals when several dice are added together. Rolling more dice produces an increasingly concentrated group of totals around the middle of the possible range.

d4: Produces results from 1 to 4. It is often used for small effects, light damage, short durations, or compact random tables.

d6: Produces results from 1 to 6. This is the familiar cube used in many board games and is also common in tabletop role-playing games.

d8: Produces results from 1 to 8 and is frequently used for damage, healing, and medium-sized random tables.

d10: Produces results from 1 to 10. It can be used by itself or as part of a percentile system.

d12: Produces results from 1 to 12 and is often used for larger effects or high-damage rolls.

d20: Produces results from 1 to 20. Many tabletop role-playing systems use it for checks, attacks, saves, and other success-or-failure tests.

d100: Produces results from 1 to 100. It is useful for percentages, percentile tables, large outcome tables, and results that need one hundred possible values.

This tool generates a single value from 1 through 100 when you select d100.

At a physical game table, a d100 roll is often made using two ten-sided dice. One represents the tens digit and the other represents the ones digit. A tens result of 70 and an ones result of 4 represents 74.

In many percentile systems, 00 and 0 together represent 100 rather than zero. The digital d100 avoids digit interpretation by displaying the final percentile value directly.

Positive modifiers increase the final result, while negative modifiers reduce it. A modifier normally represents a bonus, penalty, ability score, skill value, item effect, difficulty adjustment, or another rule defined by the game.

The modifier is applied once to the complete subtotal. Rolling 4d6 with a +3 modifier adds 3 after all four dice have been totalled; it does not add 3 to every individual die.

The tool accepts whole-number modifiers from -100 through +100. Enter 0 when the roll does not require a modifier.

The history section keeps the latest 20 completed rolls from the current page session. Each history row shows the individual dice results and the final total.

The newest roll appears first. Select Clear history to remove all displayed history without changing the selected die, dice count, or modifier.

History is intended as a temporary reference during a game. It does not permanently save rolls, identify players, display timestamps, or create a verifiable game record.

The d4, d6, d8, d12, and d20 have the shapes of the five Platonic solids: the tetrahedron, cube, octahedron, dodecahedron, and icosahedron. The common d10 has a different shape called a pentagonal trapezohedron.

On a conventionally numbered six-sided die, opposite faces are paired as 1 and 6, 2 and 5, and 3 and 4, so each opposite pair totals 7. This physical face arrangement does not affect a digital d6 result.

Twenty-sided objects are much older than modern tabletop role-playing games. Surviving ancient 20-sided polyhedra date back roughly two thousand years, although their exact uses are not always known.

The singular form is die, while dice is traditionally plural. In modern everyday English, dice is also commonly used for one die.

Rolling a natural 20 simply means the d20 itself showed 20 before modifiers. Whether that creates a critical result depends on the rules of the game being played.

Use a d6 for games that require an ordinary six-sided die, or roll 2d6 when a game uses a pair of dice. The individual results remain visible as well as their combined total.

Dice can also randomize numbered choices, encounter tables, writing prompts, classroom exercises, turn order, movement distances, or informal decisions.

Check the rules before replacing specialist game components. Some games use custom symbols, weighted outcomes, reroll rules, dice pools, or other mechanics that this standard numeric roller does not reproduce.

The roller supports common polyhedral dice used in tabletop role-playing games. Use the d20 for checks when required by your game, and select other dice for damage, healing, random tables, or effects.

You can enter a positive or negative modifier and see both the raw roll and final total. This makes it easy to confirm whether the modifier was applied correctly.

Special mechanics such as advantage, disadvantage, exploding dice, rerolling ones, success counting, keeping the highest dice, and dropping the lowest die must be handled manually or with a more specialized roller.

Roll generation, totals, modifiers, keyboard controls, and recent history are handled in your browser. The results are not sent to a server.

Each individual die is generated within the supported range using browser-provided Web Crypto random values when available.

This tool is appropriate for tabletop games, board games, classroom activities, and casual randomization. It is not a physical dice simulator, casino-certified random-number system, independently audited draw, or security-sensitive random generator.