What Is a Dice Roller?
A dice roller simulates rolling one or more dice with any number of sides, using true random number generation — handy for tabletop games, RPGs, classroom probability lessons, or settling a quick decision.
How to Use the Dice Roller
- Choose how many dice to roll.
- Choose the number of sides per die (D4 through D100).
- Click "Roll the Dice" for a fresh random result.
How Dice Rolling Works
Each die roll generates a cryptographically random whole number between 1 and the number of sides you chose, then sums all dice for the total. Each roll is independent — previous rolls never affect future ones.
Probability Reference
For a single standard 6-sided die, each face (1-6) has an equal 1-in-6 (about 16.7%) chance of appearing on any roll. Rolling two dice and summing them produces a bell-shaped distribution — 7 is the most likely total (6 out of 36 combinations), while 2 and 12 are the least likely (1 out of 36 each).
Common Uses
- Tabletop role-playing games (D&D and similar systems use D4 through D20).
- Board games requiring standard D6 dice.
- Teaching probability and statistics concepts.
- Quick random decision-making.
Frequently Asked Questions
It uses your browser's cryptographically secure random number generator, providing high-quality randomness suitable for games and simulations.
D20 refers to a 20-sided die, commonly used in tabletop role-playing games like Dungeons & Dragons — 'D' stands for 'die' and the number is the side count.
It varies by total — 7 is most likely (6 out of 36 combinations, about 16.7%), while 2 and 12 are least likely (1 out of 36 each, about 2.8%).
This tool supports up to 20 dice per roll; for larger simulations, you can roll multiple times and sum the results.
A D100 (percentile die) generates a number from 1-100, often used in games for percentage-based checks or tables with 100 possible outcomes.