Dice Roller
Roll any dice type — d4, d6, d8, d10, d12, d20, d100 — with modifiers, advantage/disadvantage, and full roll history. Perfect for D&D, Pathfinder, and all tabletop RPGs.
🎲 About This Dice Roller
This free online dice roller simulates all standard tabletop dice: d4, d6, d8, d10, d12, d20, and d100. Whether you play Dungeons & Dragons, Pathfinder, Shadowrun, Call of Cthulhu, or any board game that requires dice, this tool gives you instant, fair random results without needing physical dice.
The roller uses JavaScript's cryptographically seeded Math.random() to ensure fair results on every roll. You can roll multiple dice simultaneously, add or subtract modifiers, and use advantage or disadvantage mechanics for D&D 5e.
📜 History of Dice
Dice are among humanity's oldest gaming tools. Cube dice (d6) have been found in archaeological sites from Mesopotamia dating back over 5,000 years. The ancient Romans and Greeks used dice extensively for gambling. Polyhedral dice — the multi-sided shapes used in modern RPGs — were developed by mathematicians studying Platonic solids. The modern RPG dice set (d4, d6, d8, d10, d12, d20) was popularized by Dungeons & Dragons when it launched in 1974, revolutionizing tabletop gaming.
🎯 Common Uses
- Dungeons & Dragons attacks, skills checks, and saving throws
- Pathfinder and other tabletop RPG combat
- Board games that require dice but are missing physical dice
- Statistical probability demonstrations
- Random number generation for decisions
- Online tabletop sessions with remote players
- Game design and playtesting
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Frequently Asked Questions
❓ What is a d20?
A d20 is a 20-sided die — the signature die of Dungeons & Dragons. It determines outcomes of attacks, ability checks, and saving throws. Rolling a 20 is a "critical hit" (natural 20).
❓ What does rolling with advantage mean?
Advantage means you roll two d20 dice and take the higher result. Disadvantage means you take the lower result. These are core Dungeons & Dragons 5th Edition mechanics.
❓ What is a d100 (percentile dice)?
A d100 gives a random number from 1 to 100. In physical form it is two d10 dice (one for tens, one for units). Used in many RPGs for percentile-based skill checks.
❓ Can I roll multiple dice at once?
Yes — select up to 20 dice to roll simultaneously. You will see each individual result and the combined total. Perfect for rolling damage dice like 3d6 or 2d8.
❓ What is a modifier in dice rolling?
A modifier is a fixed bonus or penalty added to the total dice result. In D&D, your attack modifier is your proficiency bonus plus your ability modifier. Example: d20 + 5 modifier.
❓ Is this dice roller truly random?
Yes. This roller uses JavaScript's Math.random() function which is seeded by the browser's cryptographic entropy, making it statistically fair for gaming use.
🎲 Related Tool
Need a number from a custom range beyond standard dice, or multiple unique numbers at once? Try our Random Number Generator — supports any range, up to 100 numbers, no-repeat mode, and cryptographically secure generation for lottery picks, raffles, and statistical sampling.