A number wheel from 1 to 20
Spin for a number from 1 to 20. Every number has exactly a 5% chance, the same as a twenty-sided die. The numbers are big enough to read on a projector, and the wheel lands with a satisfying slow finish.
Roll a d20
The d20 is the star of tabletop role-playing games. It decides whether you hit, persuade, sneak or fall flat on your face.
- Ability checks and attacks: spin once and add your bonus.
- Advantage: spin twice and take the higher result.
- Disadvantage: spin twice and take the lower result.
- Random tables: many adventures have twenty-entry tables for loot, weather or encounters. Spin for the row.
Tip: Playing online? Use full screen and share your screen so the whole party sees the roll land.
In the classroom
- Call on students: a class of twenty, numbered on the roster. Spin, and remove each number once they’ve answered.
- Twenty questions: spin for which question card to read next.
- Spelling list: twenty words this week? Spin for the next word in the quiz.
Odds at a glance
| You need | Chance on one spin |
|---|---|
| Exactly 20 | 5% |
| 15 or higher | 30% |
| 10 or higher | 55% |
| 2 or higher | 95% |
Fair and random
Results come from your browser’s cryptographic random number generator and are picked before the wheel starts turning. For other dice, try 1 to 6, 1 to 12 or 1 to 100 for percentile rolls.