Roll any number of dice at once. Pick a standard polyhedral die — d4, d6, d8, d10, d12 or d20 — or choose "Custom" to define a die with any number of faces, from a 2-sided coin-like die up to a million. Each roll shows every individual result plus the combined total, and the last several rolls are kept in a history list so you can compare outcomes.
Every face is chosen using crypto.getRandomValues, the browser's cryptographically secure random source, combined with rejection sampling so there is no modulo bias — each face is exactly equally likely. Nothing is sent to any server; all rolling happens locally in your browser, which makes this handy for tabletop role-playing games, board games, teaching probability, or any fair random draw.