Custom Dice Roller Calculator
Define the faces of your custom die (numeric values) and roll as many dice as needed. Great for game design or probability experiments.
Each entry represents a face value. Duplicate faces are allowed.
How to Use This Calculator
- Define custom die faces (any numeric values) separated by spaces or commas.
- Set how many dice to roll.
- Press “Roll” to generate outcomes, totals, and frequencies.
- Use the results for game design, simulations, or probability experiments.
Formula
Each roll selects uniformly from the provided list of faces.
Expected value per die = average of face values (accounting for duplicates).
Total expected value for n dice = n × expected value per die.
Full Description
This tool simulates rolling dice with arbitrary faces, supporting repeated values and negative numbers. It’s ideal for homebrew tabletop mechanics, weighted outcomes, or mathematical exploration of discrete distributions.
Frequently Asked Questions
Can I have non-integer faces?
Yes. Any numeric values are accepted (integers, decimals, positive, or negative).
Do duplicates alter probabilities?
Yes. If a face appears multiple times, it has higher probability proportional to its frequency in the list.
Is there a limit on number of dice?
Extremely large counts may impact performance. Keep values moderate for responsive results.
Can I roll multiple batches?
Yes. Each click produces a new batch, replacing the previous results for clarity.