🎲 Free Online Dice Roller
Roll virtual dice for tabletop games, D&D, board games, and more. Supports D4, D6, D8, D10, D12, D20, and D100. Roll up to 10 dice at once.
What is this tool?
Our free online dice roller simulates rolling real dice for tabletop role-playing games (RPGs), board games, educational activities, and random decision-making. It supports all standard polyhedral dice types: D4, D6, D8, D10, D12, D20, and D100. You can roll up to 10 dice at once and see each individual result alongside the total and average. The dice roll animation makes it feel like you are rolling real dice, complete with a satisfying visual effect. Whether you are playing Dungeons & Dragons, Warhammer, Yahtzee, or just need a random number generator, this virtual dice roller has you covered. All rolls are generated using cryptographically influenced randomness via JavaScript's Math.random(), ensuring fair and independent results.
How it works
The dice simulator uses JavaScript's Math.random() function to generate uniformly distributed random numbers. For each die, the tool:
- Generates a random number between 0 (inclusive) and 1 (exclusive)
- Multiplies by the number of sides to get a value in [0, sides)
- Adds 1 and floors the result to get an integer in [1, sides]
Each die is rolled independently, so the outcomes are statistically independent — rolling a 20 on a D20 does not affect the next roll. Over many rolls, each face appears with approximately equal frequency, converging toward a uniform distribution.
How to use
- Choose number of dice — Enter how many dice to roll (1-10) using the number input.
- Choose die type — Select the number of sides from the dropdown: D4, D6, D8, D10, D12, D20, or D100.
- Click Roll Dice — The dice animate and display each result. The total sum and average are calculated automatically.
- Roll again — Click the button anytime to reroll all dice with fresh random values.
Reference Table
| Die | Range | Common Use |
|---|---|---|
| D4 | 1-4 | Low-damage weapons, small spells |
| D6 | 1-6 | Most board games, ability scores, many weapons |
| D8 | 1-8 | Medium weapons, healing spells |
| D10 | 1-10 | Heavy weapons, percentile pairs |
| D12 | 1-12 | High-damage weapons, barbarian hit dice |
| D20 | 1-20 | Attack rolls, skill checks, saving throws (D&D core) |
| D100 | 1-100 | Percentile rolls, random tables |
Frequently Asked Questions
Is this dice roller truly random?
This dice roller uses JavaScript's Math.random() function, which provides statistically uniform pseudo-random numbers suitable for gaming and casual use. For cryptographic or security-sensitive applications, hardware-based random number generators would be more appropriate.
Can I use this for D&D?
Absolutely! The D20 is the most iconic die in Dungeons & Dragons, used for attack rolls, ability checks, and saving throws. Our roller supports all standard D&D dice types: D4, D6, D8, D10, D12, D20, and D100 for percentile rolls.
Can I roll different types of dice at once?
Currently, all dice rolled at once are the same type (e.g., 3 D20s). For mixed dice pools (e.g., 1 D20 + 2 D6), make separate rolls for each type.
Tips & Advice
For tabletop RPG game masters, this online dice roller is great for quickly resolving combat encounters without hunting for physical dice. If you need to make many rolls in sequence (e.g., generating a set of character ability scores), try rolling 4 D6 and dropping the lowest — a common method for D&D character creation. D100 (percentile) rolls are useful for random encounters, treasure tables, and wilderness exploration charts. For classroom probability experiments, roll multiple D6 dice and track the distribution of sums — the central limit theorem ensures the results form a bell curve for 3+ dice. Also check out our Random Number Generator for custom numeric ranges.