Dice tools

A dedicated page for dice: Dice roller, TRPG dice checks, and Dice stats for success odds and distributions. Everything stays in your browser during tables or streams.

All randomness and history stay in your browser; nothing is uploaded.

Other languages: ja | en

Browse dice & TRPG tools

Pick the tool that fits: free-form dice, focused TRPG checks, or success odds and distributions.

Dice Roller

Roll d4–d100 with quick buttons or expressions like 2d6+3, see totals and breakdowns, keep history, and share text or PNG cards.

Open Dice Roller

TRPG dice check

Run d20 checks with advantage or disadvantage, compare against a DC, and roll dice pools to count successes with a compact summary.

Open TRPG dice check

Dice stats

Compute odds like “2d6+3 ≥ 10,” switch between Exact and Sim automatically, and view mean/SD, modes, and histograms. Share via text, PNG, or URL.

Open Dice stats

How to use these dice tools

  1. 1) Pick a tool. Use Dice Roller for free-form expressions, TRPG dice check for d20 or pool checks, and Dice stats when you need success odds or distributions.
  2. 2) Roll and read. Keep the browser window open during your session and read totals, successes, or success probability at a glance.
  3. 3) Share if needed. Copy text logs, PNG cards, or prefilled URLs to share rolls with your group.