Instant decisions. Heads or tails, roll any dice.
Flip a coin or roll dice online — instantly. Choose from D4, D6, D8, D10, D12, D20 and D100. Roll multiple dice at once. Perfect for board games, D&D, tabletop RPGs, or settling any argument fairly.
For a coin flip, hit the big Flip button. The coin animates and lands on heads or tails. The running tally below tracks how many heads versus tails you've rolled this session — handy for testing whether a real coin is biased. To roll dice, switch to the dice tab, pick the die type (D4–D100), set how many to roll, and click Roll. Each die's individual result is shown along with the sum total.
Both tools use Math.random(), which in modern browsers is seeded from the operating system entropy pool. For a coin flip, values below 0.5 become heads, the rest become tails. For dice, the result is Math.floor(Math.random() * sides) + 1. Each roll is independent — the coin has no memory of previous flips. Over thousands of trials the heads/tails split converges on 50/50, but ten heads in a row remains entirely possible (about 1 in 1024).
Settling who pays the bill, deciding takeaway vs cooking, picking a colour for a paint job, classroom probability lessons, replacing a lost board-game die, or randomising the kickoff for a backyard sports match. Nothing is logged — every flip is private.