Coin Flip — Heads or Tails (Crypto-Fair)

How to use

1. Flip once, or set a count.
2. Read heads/tails stats live.

About this tool

Decisions, bets, statistics class: flip once with a clean result, or a thousand times and watch the percentages converge on 50/50 — real crypto randomness, not patterns.

Flip for Names: Deciding Fairly (2026 Guide)

A coin flip settles arguments because both sides agree the coin has no favorites. This page is the calculator-grade version: crypto-random flips, single or a thousand at a time, with stats that show chance converging on 50/50. Here is how to run it fairly for named people, and the odds behind the streaks you will actually see.

Assign names before the flip, not after

For two names, lock the mapping first — heads = Ali, tails = Sara — and say it out loud, then flip. The fairness of a coin flip dies the moment someone reassigns sides after seeing the result, which is why formal draws announce the mapping first. For three or more names, coin flipping needs a bracket: flip pairwise (A vs B, winner vs C) or, cleaner, jump to the random number generator and pick 1–N in one draw. Pairwise flips stay fair per round but give earlier names a slight structural edge in some brackets; a single N-way draw has no such artifact.

The streak math your stats row will show

That last row is the payoff of the 1000-flip button: run it and watch the counter drift toward 50/50 without ever hitting it exactly. A run landing at 517 heads is not broken — it is one standard deviation plus a hair past the spread chance owes you. Same source drives the password generator, so both tools share the browser's cryptographic entropy rather than Math.random's shortcut.

FAQ

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