- Is a coin flip really 50/50?Almost, but not perfectly, if you are using a real coin. Here is what the research says.
- How to make a fair decision when you can't agreeA few simple methods that stop an argument and leave everyone feeling the process was fair.
- A short history of the coin tossPeople have been settling arguments with a flipped coin for around two thousand years.
- The gambler's fallacy, explainedAfter five heads in a row, tails is not 'due'. Here is why, and why it feels so convincing.
- How to pick a giveaway winner fairlyA clear, repeatable way to draw a winner that nobody can argue with.
- Coin flip probability chartWhat are the chances of five heads in a row? Check every number from 1 to 20 flips.
- How to split a group into fair teamsRandom, captains or balanced: which method works, and when to use it.
- Rock paper scissors strategyPure luck against a computer, but humans give themselves away. Here is what actually helps.
- Famous Coin Flips in HistoryFrom naming a city to the first pick in the NBA draft: real moments decided by a flipped coin.
- Three-Way Coin Flip: How to Decide Between 3A coin only has two sides. Here is how to choose fairly between three people or three options.
- Two-Up: The Australian Coin Game ExplainedTwo coins, three outcomes and a long tradition. How the game works and what the odds are.
Free tools
Flip a CoinHeads or tails, up to 6 coins at onceHeads or TailsCall it in the air, then flipCoin TossA fair toss for sports and gamesYes or No CoinA straight answer in one flipDecision MakerLet a coin choose between two optionsWho Goes First?Pick the first player fairlyTruth or Dare CoinFlip to choose truth or dareBest of 3 Coin FlipSettle it over a series of flipsFootball Coin TossKick-off and choice of endsRandom Number GeneratorAny range, with or without repeatsRandom Name PickerPick a winner from a list of namesRandom Team GeneratorSplit a list of names into fair teamsRock Paper ScissorsPlay the computer, keep scoreRandom Letter GeneratorVowels, consonants or any letterCricket Coin TossToss for bat or bowlTennis Coin TossToss for serve, receive or endRandom Number 1 to 10Pick a number from one to tenRandom Number 1 to 100Pick a number from one to a hundredWho Pays the Bill?Let a fair draw choose who paysDice Rollerd4, d6, d8, d10, d12 and d20Coin Flip OddsStreak and probability calculatorGuidesHow coin flips, odds and fair decisions work