Premium Converters
Loading
Loading, please wait.
Loading
Loading
Flip coins or roll dice with cryptographic randomness. Single or bulk (up to 1000), full statistics, multiple die sizes.
Fun
Generated on May 23, 2026
crypto.getRandomValues for true cryptographic-quality randomness — every flip is independent (each has exactly 50/50 odds), and every die face is equally likely. No browser bias, no patterns.Flip coins or roll dice with cryptographic randomness. Single or bulk (up to 1000), full statistics, multiple die sizes.
The Coin Flip & Dice Roller produces randomized coin flips (heads / tails) and dice rolls (4, 6, 8, 10, 12, 20, or 100-sided) using your browser's cryptographically-secure crypto.
Formula
Coin: P(heads) = P(tails) = 0.5. Dice: P(face) = 1/sides for each side. Bulk results show empirical distribution that converges to theoretical with enough trials.Three classic use cases land here every day. First: you're playing Monopoly or Ludo with cousins at a family gathering and the dice have mysteriously vanished — Ludo King is on someone else's phone — and you need 2d6 right now. Second: you're a D&D player or DM and need a quick d20 check without digging out your physical dice bag. Third: you and your sibling can't agree on something trivial and need a coin flip to settle it. This tool covers all three with proper cryptographic randomness — crypto.getRandomValues, the same source security applications use, not the weaker Math.random. Single flip, bulk mode up to 1,000 coins or 100 dice, full statistics on outputs (heads/tails counts and percentages; total, average, min, max for dice), and support for every standard polyhedron from d4 to d100. The bulk mode is genuinely interesting beyond gaming — flip 100 coins and watch the heads/tails ratio converge toward 50/50, which is the law of large numbers made visible. Statistics teachers love this for class demos. One important reality check: even 100 flips of a fair coin can produce 35-65 heads about 95% of the time, so don't read patterns into small samples. Your brain pattern-matches where no pattern exists.
The Coin Flip & Dice Roller produces randomized coin flips (heads / tails) and dice rolls (4, 6, 8, 10, 12, 20, or 100-sided) using your browser's cryptographically-secure crypto.getRandomValues — true uniform randomness with no bias or patterns. Useful for board games (D&D, Monopoly, Risk), settling disputes, decision-making, statistics demonstrations, and anywhere you need unbiased random outcomes. Bulk mode flips up to 1,000 coins or rolls up to 100 dice at once with full statistics: heads/tails counts and percentages for coins; total, average, min, and max for dice.
Flip 1 coin to settle a small decision (50/50 odds).
Roll 2d6 for Monopoly or board games (sum 2-12).
Roll 4d6 drop lowest for D&D character ability scores.
Flip 100 coins to demonstrate the law of large numbers — the heads/tails ratio converges to 50/50.
Roll 20-sided dice (d20) for Dungeons & Dragons skill checks.
Roll d100 (percentile dice) for tabletop RPG random tables.
Jump to a ready-made conversion — useful for quick reference and sharing:
Age on Other Planets
See your age in years on Mercury, Venus, Mars, Jupiter, Saturn, Uranus and Neptune, calculated from each planet's orbital period — a fun STEM tool for kids and classrooms.
Chronological Age Calculator
Calculate someone's exact age in years, months and days on any past, present or future date — handy for biographies, legal eligibility checks and retirement planning.
Zodiac Sign Calculator
Find your Western sun sign (Aries to Pisces) and Chinese zodiac animal from date of birth, with the element (Fire, Earth, Air, Water) and symbol for each sign.
Days Until... Calculator
Count the days, weeks and months until any event — birthdays, exams, weddings, Eid, Christmas, Independence Day — with presets for popular Pakistani and global holidays.
Numerology Calculator
Find your Life Path, Expression, Soul Urge, and Personality numbers from your birth date and full name.
Chinese Zodiac Calculator
Find your Chinese zodiac animal and element from your birth year. Includes traits, lucky colors, and compatibility.
Dog Age Calculator (in Human Years)
Convert your dog's age to human years using the modern epigenetic formula AND the traditional AVMA size-based estimate.
Cat Age Calculator (in Human Years)
Convert your cat's age to human years using the AAFP / Cornell formula. Indoor vs outdoor life-expectancy comparison.
Browse all Fun calculators & converters
See every tool in this category, plus FAQs and category-specific guides.