# Dice & Coin Simulator Flip a fair coin or roll dice of any type — d4 to d100 — with cryptographically-random results, a running tally and history. No ads, no tracking, all in your browser. ### How it works Every roll and flip uses `crypto.getRandomValues` — the browser's cryptographically-secure random source — with rejection sampling so each outcome is exactly equally likely (no bias from the modulo operation). Nothing is sent anywhere; the randomness is generated on your device. --- *Source: [ocxly.com/dice-coin.html](https://ocxly.com/dice-coin.html) — OCXLY, free 100% client-side privacy-first tools. Free online dice roller and coin flip simulator. Roll d4 to d100 or flip a fair coin with cryptographically-random results, a running tally and history. Runs entirely in your browser.*