🎲 Dice Roller
Dice Roller
Need a quick and reliable way to generate random numbers for your game? Use our free online Dice Roller tool! Whether you’re playing a classic board game, a complex tabletop RPG like Dungeons and Dragons (D&D), or just need to settle a quick decision, our virtual dice generator provides instant, true-to-life rolls for any situation.
Why Use a Virtual Dice Roller?
A dice is a small, throwable object with multiple faces (usually six) used for generating random numbers and events, central to tabletop games and gambling. While physical dice are traditional, a virtual roller offers several key advantages:
- Convenience: Roll any number of dice with custom sides instantly, without needing a physical set.
- Accessibility: Use it on your phone, tablet, or desktop for gaming on the go.
- Near-True Randomness: Unlike mass-produced physical dice, which can be unbalanced and favor certain numbers, our virtual roller is based on a pseudo-random number generating algorithm. This makes the results significantly closer to true randomness, ensuring a fairer game.
Explore Dice Shapes: From Standard Cubes to Polyhedral Dice
Beyond the common six-sided cube, tabletop gaming, especially in the world of Role-Playing Games (RPGs), utilizes a variety of polyhedral dice—dice with more than six faces. Our tool supports both standard and non-conventional dice rolls.
| Dice Name | Number of Faces | Geometric Shape | Common Abbreviation |
|---|---|---|---|
| Four-Sided Die | 4 faces | Tetrahedron | d4 |
| Six-Sided Die | 6 faces | Cube (Standard Die) | d6 |
| Eight-Sided Die | 8 faces | Octahedron | d8 |
| Ten-Sided Die | 10 faces | Pentagonal Trapezohedron | d10 |
| Twelve-Sided Die | 12 faces | Dodecahedron | d12 |
| Twenty-Sided Die | 20 faces | Icosahedron | d20 |
In role-playing games like D&D, players often need to roll different dice types, such as “2d6” (two six-sided dice) or “1d20” (one twenty-sided die). Our Non-Conventional Dice calculator lets you define the number of sides (up to 100) and the quantity of dice for these complex rolls.
Understanding Dice Probability and Randomness:
The fundamental principle of a fair die is probability: each face should have an equal chance of landing face-up.
The Challenge of Physical Dice
Physical dice, particularly complex shapes like the d20 and d8, are difficult to mass-produce with perfect symmetry. Studies have consistently shown that many manufactured dice are slightly unbalanced, leading to a tendency to roll certain numbers more often than others. This lack of uniformity means physical dice rolls are not always truly random.
Testing Your Dice’s Fairness
While rigorous scientific testing is complex, one simple, quick-and-dirty method to check a die’s balance involves a saltwater test:
- Fill a container with water, gradually adding salt until the die just floats.
- Gently flick or spin the floating die.
- Note which side faces up. Repeat this process many times.
If the die is heavily unbalanced, you’ll see the same numbers appear with noticeable frequency. For well-balanced dice, the results will be varied. For the most consistently fair roll, however, a virtual dice roll is your best bet, as the computer algorithm doesn’t suffer from manufacturing defects.
Use our Virtual Dice Roller now to get your next perfectly random roll!
Related Calculators:
The Virtual Dice Roller is designed for quick rolls of standard six-sided (d6) dice, often used in classic board games like Monopoly or Yahtzee. It allows you to select between 1 and 10 d6 dice. The Non-Conventional Dice section is for rolling polyhedral dice used in games like D&D and Pathfinder, where you can specify both the number of dice and the number of sides (e.g., d4, d8, d12, or custom sides up to d100).
No, both physical and virtual dice are technically not truly random. Physical dice are often unbalanced due to manufacturing imperfections. Our virtual dice roller uses a pseudo-random number generating algorithm. While this algorithm is deterministic (meaning it follows a predictable pattern), it is highly complex and designed to produce results that are statistically indistinguishable from true randomness. In practice, a virtual roll is generally considered more reliably random than most mass-produced physical dice.
Polyhedral dice are dice with multiple faces, going beyond the standard six-sided cube. They are shaped like geometric solids (polyhedra) and are essential for tabletop role-playing games (TTRPGs) like Dungeons and Dragons. Each shape (d4, d8, d10, d12, d20) is used to determine the outcome of different actions, such as calculating damage, making ability checks, or rolling for initiative, offering a greater range of numerical outcomes than a simple d6.
A common, simple method is the saltwater test. You dissolve enough salt in a glass of water until your die just floats. By repeatedly flicking or spinning the floating die and recording the results, you can see if certain numbers appear more often than expected. If one number repeatedly faces up, the die is likely unbalanced and not truly random.
Yes. After every roll, our tool automatically calculates and displays both the sum of all rolled values and the product (the result of multiplying all rolled values together). This feature is particularly useful for certain game mechanics or mathematical exercises.
The d20 (icosahedron, 20-sided die) is the most crucial die in many TTRPG systems. It’s typically used to resolve the majority of actions, such as whether an attack hits, if a character succeeds at a difficult task, or for saving throws. Rolling a single d20 to determine success or failure is a core mechanic of the Dungeons and Dragons system.