What is the dice roller?
The online dice roller rolls any number of fair virtual dice, from a single d6 to a handful of d20s for tabletop RPGs.
Set how many dice to roll and how many sides each one has, then press Roll. The results and the total appear straight away.
How to use the dice roller
Enter how many dice you want (1–20).
Enter the number of sides, such as 6 for a standard die or 20 for a d20.
Press Roll dice to see each result and the total.
Check the history line to review earlier rolls during a game session.
Choosing the right dice for your game
Different games lean on different dice. Most family board games use one or two six-sided dice (d6), while tabletop role-playing games use a full polyhedral set: d4, d6, d8, d10, d12 and the iconic d20. Percentile rolls use a d100, which is simply a number from 1 to 100.
Rolling several dice changes the shape of the results. One d6 gives each face an equal one-in-six chance, but the total of two d6 clusters around 7, because there are more combinations that make 7 than make 2 or 12. That's why 7 shows up so often in games built on two dice, and it's a great live example for maths lessons.
This roller lets you pick any number of sides from 2 to 1,000 and up to 20 dice per roll. It shows each die individually plus the total, so you can apply advantage, keep the highest, or add modifiers yourself.
Dice probability made simple
With one fair die, every face has the same chance: one in six for a d6, one in twenty for a d20. Things get interesting when you add dice together. Two d6 can make totals from 2 to 12, but there's only one way to roll 2 (1+1) and six ways to roll 7. That's why middle totals appear far more often than extremes.
Role-players use this deliberately. Rolling 3d6 for a character stat produces mostly average values with occasional highs and lows, while a single d20 swings evenly from 1 to 20. Systems with advantage, where you roll twice and keep the higher, push the average up to around 13.8 on a d20.
Teachers can turn this into a quick investigation. Roll 2d6 fifty times, tally the totals, and draw a bar chart. The hill-shaped graph that appears is a first look at the normal distribution, built from nothing more than dice.
Common dice notation
Game books write rolls in dice notation: the number of dice, the letter d, and the number of sides. 3d6 means three six-sided dice added together, and 1d20+5 means one twenty-sided die plus five. Enter the first two numbers here and add any modifier to the total yourself.
Key terms explained
Polyhedral set
The seven dice used in most RPGs: d4, d6, d8, d10, percentile d10, d12 and d20.
Modifier
A fixed number added to or subtracted from a roll, such as +3 for a skilled character.
Dice Roller Online features
Any die size
From coin-like d2 to d1000, including every standard RPG die.
Up to 20 dice
Roll big damage pools or a handful of d6 in a single click.
Individual results and totals
See each die and the sum, so modifiers and keep-highest rules stay simple.
Fair rolls
Each die is generated with cryptographic randomness, and there are no weighted faces.
Roll history
Recent rolls are listed so the table can double-check results.
No app needed
It runs in any browser on desktop, tablet or phone.
Popular uses
Tabletop RPGs
Attack rolls, saving throws and damage for D&D, Pathfinder and other systems.
Board game backup
Missing dice? Keep the game going with a phone on the table.
Maths lessons
Compare one-die and two-dice distributions and plot the class results.
Random classroom activities
Roll for a question number, group number or page to read.
Tips and best practices
- For advantage in d20 games, roll 2 dice with 20 sides and keep the higher number.
- For a d100 roll, set sides to 100 rather than combining two d10.
- Roll a large batch, such as 20×d6, to show students how totals cluster.
- Announce modifiers before rolling to avoid table debates.
- Use the number generator for big ranges like 1–10,000.
- Share your screen in online sessions so every player sees the same roll.
Related tools: coin flip, random number generator, number wheel, gaming challenge wheel, or go back to the main spin the wheel page.
Dice Roller Online FAQs
Which dice can I roll?
Any die from 2 to 1,000 sides, including d4, d6, d8, d10, d12, d20 and d100.
How many dice at once?
Up to 20 per roll.
Are the rolls fair?
Yes. Each die uses cryptographic randomness.
Can I roll a d20?
Yes. Set sides to 20. Set dice to 2 if you need advantage or disadvantage.
Does it support d100 / percentile dice?
Yes. Set sides to 100 for a direct 1–100 result.
Why does 7 come up so often with two dice?
Six of the 36 possible combinations add up to 7, more than any other total.
Are the dice weighted?
No. Each face of each die is equally likely.
Can I add a modifier like +5?
Add it to the shown total yourself. The roller keeps the raw results visible so the maths stays clear.
What is the maximum number of sides?
1,000 sides per die.
Can I roll different dice types together?
Roll each type separately, such as 1d8 and then 2d6, and add the totals.
Is it good for online D&D?
Yes. Share your screen, or have each player roll on their own device.
What is the average roll of a d20?
10.5 on a single roll.
What is advantage in tabletop games?
Rolling two d20 and keeping the higher result, which raises the average roll.
Can I roll a single die?
Yes. Set dice to 1.
Is the dice roller free?
Yes. It's free, needs no sign-up and runs entirely in your browser.