Dice Roller

Roll up to 12 dice of any type (d4-d20) and instantly see each result and the total.

Number of dice

Sides per die

This dice roller runs entirely in your browser — rolls use your device's secure random generator and nothing is sent anywhere.

Free to use — premium coming soon

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✓ Unlimited use
✓ Instant results
✓ 100% private

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About the Dice Roller

The Dice Roller generates virtual rolls for any standard polyhedral die, from a simple six-sided d6 to the twenty-sided d20 used in role-playing games, plus the d4, d8, d10, d12, and percentile d100. You set how many dice to roll and how many sides each has, and the tool returns each individual result along with the total. It exists to replace fumbling for physical dice you do not have on hand, whether you are running a tabletop campaign, settling a board-game dispute, or just need a quick unbiased number between one and a chosen maximum.

Reach for it whenever a game calls for dice and yours are missing, or when you need more dice than you own, such as the 5d10 or 8d6 a spell or attack might require. It is also handy for teaching probability, picking a random player order, or making a fair decision when you cannot find a coin. Because results appear instantly and stack up cleanly, it suits fast-paced sessions far better than hunting under the sofa for a stray d20, and nothing rolls off the table.

Under the hood the roller maps each die to a random integer in its valid range. For an s-sided die it draws a whole number from 1 to s with every face equally likely, repeats that for the number of dice you requested, and sums the outcomes. This mirrors dice notation: a request like 3d6 means roll three six-sided dice and add them. The randomness comes from your browser's built-in generator, which produces a fresh, independent draw on every click rather than cycling through a fixed list.

On accuracy and privacy: a well-implemented digital roller is arguably fairer than a mass-produced physical die, because real dice can be slightly unbalanced from manufacturing and are nudged by table tilt and throw force, while every virtual face has identical odds. The trade-off is that browser generators are pseudo-random, not drawn from physical noise, so they should not be used for gambling or cryptography. All rolling happens locally in your browser; no rolls, totals, or game data are sent to a server or stored.

Frequently asked questions

What does dice notation like 2d6 or d20 mean?

In the standard nds format, the first number is how many dice you roll and the number after the d is the sides per die. So 2d6 means roll two six-sided dice and add them, while d20 (or 1d20) means roll a single twenty-sided die.

What is the most likely result when rolling two dice?

With 2d6 the most common total is 7, which comes up on about 16.7% of rolls because six of the 36 combinations add to seven. Totals of 2 and 12 are the rarest at roughly 2.8% each, since only one combination produces each.

Are online dice rollers actually fair?

A good digital roller gives every face an equal chance and is often more even than a physical die, which can be slightly weighted by manufacturing flaws or table conditions. It uses your browser's pseudo-random generator, which is fine for games but not intended for gambling or security uses.

Can I roll several different dice at once?

Yes. Set the number of dice and the number of sides, and the tool rolls each die independently and shows both the individual results and the combined total, the same way 4d6 or 3d8 works at the table.

Can I add a modifier like +5 to my roll?

Dice notation such as 2d6+5 means roll the dice, sum them, then add the constant. Use the roller to get the dice total and add your modifier to it; the +5 is a fixed number, not a random part of the roll.

From our blog

How to Generate Random Numbers the Right Way: Ranges, Uniqueness, and Fair Draws

By the Super Simple Digital Tools Team · Updated June 2026

Generating a random number sounds trivial until you actually need the result to be fair. Whether you are drawing a giveaway winner, picking lotto numbers, or selecting survey respondents, the value of a random number generator is that nobody, including you, can nudge the outcome. The first step is always defining your range clearly: a minimum, a maximum, and how many numbers you need. Get those three settings right and most other questions answer themselves.

The decision that trips people up most is unique versus repeatable. Think of unique mode as drawing physical balls from a bag and not putting them back, so every number is distinct, which is what you want for lotteries, prize draws, or assigning unrepeated IDs. Repeatable mode is like rolling the same die over and over, where each roll is independent and can match a previous one. If you ask for ten unique numbers from a range of one to five, no generator can deliver, so widen the range whenever you turn uniqueness on.

It also helps to know what 'random' means here. This tool, like the random functions built into most programming languages, is a pseudo-random number generator. It starts from a seed and runs an algorithm that yields a sequence indistinguishable from chance for everyday purposes. A true random number generator instead measures physical noise, such as atmospheric or thermal noise, and is reserved for high-stakes uses. As mathematician John von Neumann quipped, anyone producing random digits by arithmetic is 'in a state of sin' yet for fair draws and games the practical results are excellent.

Quality matters beneath the surface. A well-built generator spreads outcomes uniformly so each number in your range is equally likely, and it avoids modulo bias, a common flaw where careless code makes the lowest numbers appear slightly more often. Modern generators in mainstream languages and good web tools correct for this, which is why two thousand draws from one to six should land close to even across all six faces. If a generator looks lumpy over many trials, that is a red flag worth heeding.

Finally, match the tool to the task. For lotteries, raffles, classroom name-style draws, dice rolls, and random sampling, a fast pseudo-random generator is ideal and runs instantly in your browser without sending data anywhere. The one exception is security: passwords, session tokens, and cryptographic keys need a cryptographically secure generator seeded by system entropy, not a general-purpose tool. Know which job you are doing, set your range and uniqueness deliberately, and your draws will be both fair and reproducible when you need them to be.

Turn on unique numbers for any lottery, raffle, or winner draw, and confirm your range is at least as large as the quantity you request.
Leave duplicates allowed (repeatable mode) when simulating independent events like dice rolls or coin-style trials.
To imitate a real lotto ticket, set the range to your game's rules (for example 1 to 49), pick six unique numbers, and draw again for extra lines.
Never use this generator for passwords or encryption keys; choose a cryptographically secure source for anything security-related.

Read the full guide →

Tool by the Super Simple Digital Tools Team. Reviewed by our editorial team. Free to use, no signup required.