TRPG dice check

A focused dice tool for tabletop RPGs that makes d20/d100 checks, simple XdY+Z sums, and dice pool success counts quick to run, easy to read, and simple to share with your table or stream.

All processing stays in your browser, and inputs, history, and generated cards are never uploaded to a server.

Other languages: ja | en

Run TRPG checks in two taps

Leave DC empty if you only want to see the total without a success/fail judgement.

Dice type
Advantage / disadvantage
Critical: 01- / Fumble: -00

Only used when d100 is selected. Example: critical 01-05 / fumble 96-00.

  1. 1) Add a label and numbers. Name the check (for example Attack or Perception), choose d20 or d100, set your modifier and an optional DC.
  2. 2) Choose roll over or roll under. Use the checkbox to switch between “total ≥ DC” and “total ≤ DC” style checks.
  3. 3) Roll and share with your table. Tap Roll to see the total and outcome, then copy text, PNG, or a prefilled URL for chat or overlays.

Result

Result

Shows your d20 check total and whether it meets the DC.

Share & copy

History

How to use & FAQ

Keep rolls local to your browser, read totals at a glance, and share clean logs with your group while playing or streaming.

What can I do with this TRPG dice check tool?

You can run d20 checks with advantage or disadvantage, compare totals against a DC, and roll dice pools that count how many results meet a success threshold. Everything runs in your browser, with optional labels and a local history for logging your sessions.

How can I share my rolls with my group?

Use Copy text for chat logs, Copy PNG or Download PNG for visual cards, and Copy URL to share a prefilled link with the same inputs. Everything runs in your browser, and neither your inputs nor rolls are uploaded to a server.