D100 Dice Roller Calculator
Generate random d100 rolls for tabletop games, percentile mechanics, or simulations. Review statistics and outcome distribution.
Results: 19, 42, 99, 96, 58, 99, 39, 98, 41, 31
Total: 622
Average: 62.20
Highest: 99
Lowest: 19
How to Use This Calculator
- Enter how many d100 dice you wish to roll.
- Click “Roll” to generate random percentile outcomes.
- Review total, average, highest, and lowest results.
- Use the values for probability checks, tabletop encounters, or percentile-based systems.
Formula
Each d100 roll is uniform on {1, 2, ..., 100}
Expected value per die = (1 + 100) / 2 = 50.5
Variance per die = (100² − 1) / 12 ≈ 833.25
Expected total for n dice = 50.5 × n
Full Description
D100 (percentile) dice are common in role-playing games and randomization tasks. This digital roller simulates fair outcomes, providing quick statistics and summaries for multiple dice at once.
Frequently Asked Questions
What if I need percentile pairs (d10 ×2)?
This calculator rolls direct d100 values. For tens-and-ones style, interpret digits accordingly or use specialized tools.
Can I track many batches?
Only the latest roll set is shown. Copy results externally to maintain a history.
How random are the results?
They rely on JavaScript’s pseudo-random generator, adequate for casual simulations but not for cryptographic use.
Are results limited to positive integers?
Yes. Outputs range from 1 through 100 inclusive, matching physical d100 dice.