Need to make a random decision? Flip a coin or roll dice using cryptographic randomness (crypto.getRandomValues). Watch animated coin flips, roll multiple dice of any type (d4, d6, d8, d10, d12, d20, d100), track your statistics, and review your roll history. Perfect for games, decision-making, and probability experiments.
The tool has two sections: Coin Flip and Dice Roller. For coin flipping, click 'Flip Coin' to get a random Heads or Tails result with an animation. Use 'Flip Multiple' to flip up to 100 coins at once. Track your results with the built-in statistics display showing total flips, heads/tails count, and percentages. For dice rolling, select the number of dice (1–10) and dice type (d4, d6, d8, d10, d12, d20, d100), then click 'Roll Dice'. Each die shows its individual result plus the total sum.
This tool is useful for: tabletop RPG players needing quick dice rolls for D&D and other games, making random decisions when you cannot choose between options, probability and statistics educational exercises, board game players who misplaced their dice, random number generation for classroom activities, settling friendly disputes with a fair coin flip, generating random encounters and loot tables for game masters, and testing probability hypotheses with large sample sizes.
This tool uses the Web Crypto API's crypto.getRandomValues() for true cryptographic randomness, which is significantly more random than Math.random(). The random values are generated from the operating system's entropy source, making them suitable for any application requiring unbiased randomness. For coin flips, a random Uint32 is generated and checked for even/odd. For dice rolls, a random value is mapped to the die's range using modular arithmetic.
Yes. This tool uses crypto.getRandomValues(), which draws from the operating system's cryptographic random number generator. This is the same source of randomness used for encryption keys, making it as fair and unbiased as digitally possible.
The tool supports d4 (4-sided), d6 (6-sided, standard die), d8 (8-sided), d10 (10-sided), d12 (12-sided), d20 (20-sided, used in D&D), and d100 (percentile die). You can roll up to 10 dice of any type simultaneously.
Yes. The coin flip section shows your last 20 flips as colored indicators and running statistics (total, heads %, tails %). The dice roller shows your last 10 rolls with individual die results and totals. Click 'Reset' to clear the history.
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