D100 Dice Roller Calculator
Roll 100-sided dice (percentile dice) for RPGs, D&D, and percentage-based mechanics
D100 Dice Configuration
Choose how many d100 dice to roll simultaneously
Roll Results
Individual Results: 💯1 = 1
Theoretical Average: 50.5 per die
Interpretation: Critical Failure
Success Probability Analysis
Common RPG success thresholds - your roll of 1 compared to various difficulty levels
D100 Percentage Guide
Quick Statistics
D100 Usage Tips
Perfect for percentage-based skill checks
Commonly used in D&D and other RPGs
Also known as percentile dice
Can be simulated with two d10s
Lower rolls often mean better success
Understanding D100 Dice
What is a D100 Die?
The D100, also known as percentile dice or a 100-sided die, is a spherical die with 100 faces. It's commonly used in role-playing games for percentage-based mechanics and skill checks.
Physical D100 Dice
- •Also called "Zocchihedron" after inventor Lou Zocchi
- •Golf ball-like appearance with 100 small faces
- •Can be difficult to read due to small face size
- •Often ranges from 0-99 (where 0 = 100)
Alternative: Two D10 Method
Method: Roll two 10-sided dice
Designation: One die for tens, one for units
Example: Rolling 3 and 5 gives you 35
Common Applications
- •Skill success percentages in RPGs
- •Spell success rates in magic systems
- •Random encounter tables
- •Critical hit and fumble determination