Dice Roller
Roll virtual dice online in seconds — pick a die type, choose how many to roll, and get instant results. Whether you need a quick pair of six-sided dice for a board game or full dice notation support for a Dungeons & Dragons session, this tool has you covered. If you only need a simple two-outcome decision, try the Coin Flip tool instead, or use Spin the Wheel for a custom list of options. For a plain random number without any dice mechanics, see the Random Number Generator.
Roll Dice
Dice Notation
Enter standard dice notation like 2d6+3 to roll multiple dice with a modifier in one step.
Roll History
No rolls yet — roll some dice to see your history here.
Understanding Dice Notation
Dice notation, sometimes called the "NdM" convention, is a compact way to describe how many dice to roll and what to do with the result. It's used in tabletop role-playing games, board games, and rulebooks everywhere. The format is NdM, optionally followed by a modifier:
- N is the number of dice to roll (for example, the "2" in 2d6).
- d simply stands for "dice" or "die."
- M is the number of sides on each die (for example, the "6" in 2d6).
- An optional +K or -K at the end adds or subtracts a flat modifier from the total after all the dice are summed.
So "2d6" means "roll two six-sided dice and add them together," while "1d20+5" means "roll one twenty-sided die and add 5 to whatever comes up." You can try any of these directly in the Dice Notation field above.
| Notation | Meaning | Typical Use |
|---|---|---|
1d20 |
Roll one twenty-sided die | Attack rolls, skill checks, saving throws |
1d20+5 |
Roll one d20 and add 5 | An attack or check with a +5 bonus |
2d6 |
Roll two six-sided dice and sum them | Board games, simple damage rolls |
2d6+3 |
Roll two d6 and add 3 | Weapon damage with a bonus |
4d6 |
Roll four six-sided dice and sum them | Rolling ability scores (often drop the lowest) |
1d8-1 |
Roll one d8 and subtract 1 | Damage roll with a penalty |
1d100 |
Roll one hundred-sided (percentile) die | Percentage-based tables and outcomes |
Where Each Die Type Is Used
d6 — the classic die
The standard six-sided die is the one most people already own. It shows up in countless board games like Monopoly and Yahtzee, and it's a common building block for tabletop RPG damage rolls too (many weapons deal 1d6 or 2d6 damage).
d20 — the tabletop RPG workhorse
The twenty-sided die is the backbone of games like Dungeons & Dragons and many other tabletop RPGs. It's rolled for attack rolls, skill checks, and saving throws, where a high roll usually means success and a natural 20 is often a critical hit.
d10 and percentile (d100)
A single d10 gives a result from 1–10, while two d10s read together (or a dedicated d100) generate a number from 1–100. Percentile rolls are used for percentage-based systems — things like random encounter tables, loot tables, or any rule expressed as "there's a 35% chance of X."
d4, d8, and d12 — RPG damage dice
These odd-shaped dice are almost exclusively used in tabletop RPGs, most often for weapon and spell damage. A dagger might deal 1d4 damage, a longsword 1d8, and a greataxe 1d12 — the die size scales roughly with how much damage the weapon deals.
Frequently Asked Questions
Is this dice roller truly random?
Each roll uses your browser's built-in random number generator to pick a value uniformly between 1 and the number of sides on the die, exactly like a physical die would. It isn't cryptographically secure, but it's more than random enough for games, homework, and everyday decisions.
What does "d20" mean?
"d20" is shorthand for "a twenty-sided die." The letter "d" stands for die/dice, and the number after it is how many sides that die has. So d6 is a six-sided die, d10 is a ten-sided die, and so on.
Can I roll dice with a modifier like +3?
Yes. Use the Modifier field above the Roll button to add (or, with a negative number, subtract) a flat amount from your total after the dice are rolled. You can also include a modifier directly in dice notation, such as 1d20+3.
What's the highest number of dice I can roll at once?
This tool caps rolls at 20 dice at a time. That's a generous amount for nearly any game situation, and it keeps the individual die results readable on screen instead of turning into an overwhelming wall of numbers.
Can I use this for tabletop RPGs like D&D?
Absolutely. The full range of standard RPG dice (d4, d6, d8, d10, d12, d20, and percentile d100) is supported, along with dice notation for combining multiple dice and modifiers in a single roll — everything you need for attack rolls, damage, skill checks, and saving throws.
