Dice Roller & Coin Flip
Roll any standard die — or flip a coin — with cryptographically fair randomness. Perfect when the real dice are missing from the box.
Common uses
- Board games — roll 2×d6 when the dice have vanished under the sofa.
- Tabletop RPGs — d20 for attack rolls, d4–d12 for damage, d100 for percentile tables.
- Quick decisions — flip a coin; best of five for the indecisive.
- Teaching probability — roll 100 dice at once and compare the totals to theory.
Frequently asked questions
Are the rolls fair?
Yes — results come from crypto.getRandomValues(), your device's cryptographically secure generator, with rejection sampling so every face is exactly equally likely. Fairer than most physical dice, which have small manufacturing biases.
Can I roll multiple dice and get the total?
Yes — set "How many?" and you'll see each individual roll plus the sum, e.g. 4 + 2 + 6 = 12.
Last updated: 2026-07-13