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Dice Pool Success Lab

Compare independent dice pools with per-die success thresholds and the chance of reaching a required success count.

Pool comparisonCompare scenariosCSV & printable report

Make the next step clearer

Open CSV / project

Preparing the worked example…

Make it yours

Settings & assumptions

Dice pools

Your result, explained

02 / RESULTS

Read the result in context

Fair independent dice with identical thresholds within each row. No rerolls, exploding dice, criticals or opposed rolls.

How to use Dice Pool Success Lab

Explore the worked example. Compare pools with different dice counts and success thresholds, including the chance of reaching a target number of successes.
Replace the dice pools with your own entries. Set .
Choose “Explore success odds”. Review pool comparison and success distributions, then compare the visual overview with the detailed tables.
Capture alternative scenarios, download a reusable project and export the selected table or a report when you are ready.

A starting point

Compare pools with different dice counts and success thresholds, including the chance of reaching a target number of successes. The example is illustrative and can be replaced.

Know what you are comparing

Which dice assumptions are used?

Dice are fair and independent. Each die succeeds when its face reaches the entered threshold; the success count follows a binomial distribution.

Files, privacy & saving

Calculations run locally in a browser worker. Input CSV files use the column names in the downloadable template and keep your current settings. Projects restore inputs and up to four scenarios. Imports are limited to 1 MiB and 100 entries. There is no automatic saving. Public pages include advertising and optional analytics; see our privacy policy.

CSV exports contain the entire selected table. JSON and printable HTML reports include all result tables; open the report and use your browser’s Print command for PDF.

Using Dice Pool Success Lab

Compare independent dice pools with per-die success thresholds and the chance of reaching a required success count.

Explore the worked example. Compare pools with different dice counts and success thresholds, including the chance of reaching a target number of successes.
Replace the dice pools with your own entries. Set .
Choose “Explore success odds”. Review pool comparison and success distributions, then compare the visual overview with the detailed tables.
Capture alternative scenarios, download a reusable project and export the selected table or a report when you are ready.

Example

Compare pools with different dice counts and success thresholds, including the chance of reaching a target number of successes.

Questions & answers

Which dice assumptions are used?

Dice are fair and independent. Each die succeeds when its face reaches the entered threshold; the success count follows a binomial distribution.

Can I compare and save alternative plans?

Yes. Capture up to four calculated scenarios, restore their inputs and save them in a project JSON file. There is no automatic saving.

How do I bring in my own entries?

Download the CSV template, retain its column names and replace the example rows. Imports are limited to 100 entries and 1 MiB. A saved project also restores settings.

What should I check before using the result?

Fair independent dice with identical thresholds within each row. No rerolls, exploding dice, criticals or opposed rolls.