Learn
- Is a Coin Flip Really 50/50?A fair coin is 50/50 for heads or tails, but real flips land on their starting side 50.8% of the time. See the 350,757-flip study and what it means.
- Coin Flip Probability CalculatorCoin flip probability made simple: chances of k heads in n flips, streaks in a row and 100-flip results, with a free calculator and ready-made charts.
- How to Flip a CoinHow to flip a coin the fair way: grip, thumb flick, call it in the air, catch or let it land. Plus why spinning is biased and how to toss a coin online.
- Heads or Tails: Which Side Is Which?Heads is the obverse (the portrait or emblem side), tails is the reverse. How to label coin flips on US, euro, Indian and other coins, with examples.
- A Short History of the Coin TossWhere coin flipping came from: Roman "ship or head", English "cross and pile", the toss that named Portland and the Wright brothers' first-flight toss.