Dice Roller

By Calxy · Calculation methodology

Roll custom dice and see each result, the total, possible range and expected average.

Printed from Calxy · https://www.calxy.net/other/dice-roller

1 – 100

2 – 1000

Dice total

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Choose Roll dice to generate a result.

Method

Each die produces an integer from 1 to its number of sides. Browser random values are sampled with rejection to avoid modulo bias. For n dice with s sides, the expected total is n(s+1)/2.

Worked example

Two six-sided dice can total 2–12, and their expected average total is 7. A total of 7 has six ordered outcomes out of 36; a total of 2 has only one.

Assumptions and limits

Choose 1–100 dice with 2–1,000 sides each. Results are generated only after pressing Roll dice and are not predetermined. Sharing preserves settings, not the outcome; this is not an audited gambling system.

Last updated . Results are estimates for informational purposes only.