How-to guide Dice roller

How to Simulate Dice Rolls for a Probability Experiment

Here’s how to simulate dice rolls for a probability experiment: choose a fixed number of equal-sided dice, generate the sample, and record each outcome before calculating frequencies.

How to Simulate Dice Rolls for a Probability Experiment

Twenty six-sided rolls form an example dataset. They are treated as individual observations rather than as one meaningful game total. The settings below match the worked example. Change them to match your activity. Nothing is generated until you select Roll dice.

Settings

Configure your result

1–100 dice · 2–100 sides

Each click generates a new result.

Result

Waiting for input

No result yet

Generate a result using the settings on the left.

Runs in your browser. Your input is not uploaded.1–100 dice · 2–100 sides

Prefer the standalone tool? Open Random Dice Roller

Step-by-step instructions

  1. Choose the die size

    Set Sides per die to the die your activity needs, such as 6 or 20. The choices run from 2 to 100 sides.

  2. Set the number of dice

    Choose how many equal-sided dice to roll in this batch, up to 100. Mixed die sizes require separate saved batches.

  3. Roll and interpret the values

    Select Roll dice. Read each value individually or use the displayed total if your rules call for a sum.

Worked example

Twenty six-sided rolls form an example dataset. They are treated as individual observations rather than as one meaningful game total.

One valid result is shown below. Your generated outcome will vary.

Example settings

Sides per die: 6
Number of dice: 20

Example result

1. 6
2. 5
3. 5
4. 5
5. 2
6. 1
7. 6
8. 5
9. 2
10. 6
11. 6
12. 2
13. 1
14. 1
15. 2
16. 5
17. 4
18. 5
19. 3
20. 3

Count how many times each face appears and divide by 20 for observed proportions. A small sample need not show every face equally often.

Do not confuse face frequencies with sum frequencies

A sample of single-die outcomes investigates a different distribution from sums of pairs. If you need pair totals, generate and record separate two-die trials rather than summing one long batch and treating it as many trials. The page does not keep cumulative statistics or automatically group a saved list into experiments.

Settings and limits to check

Each die independently selects an integer from 1 through the chosen side count. Repeats are valid, so two six-sided dice can both show 4. The total adds the displayed dice but does not apply game modifiers, advantage rules, reroll conditions, or custom success thresholds. Those interpretations belong to your game rules.

Settings used in this example
Sides per die: 6
Number of dice: 20

Keep a usable copy of the result

Use Copy to place the current result in your own notes, or Download to keep a text file. Keep the range, count, or other settings with the result when they are needed to interpret it. A new generation replaces the displayed result rather than adding to a saved history.

The tool runs in your browser and does not upload your input. Save the result before refreshing or leaving the page. If other people need to use the same outcome, share your saved copy rather than asking them to generate another independent result.

Frequently asked questions

Can I download a frequency table directly?

The tool downloads the raw outcomes, not a calculated frequency table. Count or analyze the saved data separately.

Can I roll different die sizes together?

One batch uses a single side count. Roll and save each die type separately if your game combines sizes.

Does the total include bonuses or penalties?

No. The total is the sum of the raw dice. Apply your game’s modifiers afterward.

What should I check in the worked example?

Count how many times each face appears and divide by 20 for observed proportions. A small sample need not show every face equally often.