Coin Flip
A classic fair coin flip. Each flip is an independent 50/50 chance between heads and tails, produced with cryptographically secure randomness — not a simulated physics animation deciding the result.
What this generator does
Flips a virtual coin and returns heads or tails. It exists for the moments a real coin is not to hand — settling who goes first, breaking a tie, making a genuinely arbitrary choice — and it is deliberately the simplest tool on the site.
How to use this tool
- Press flip to toss the coin.
- Read the result: Heads or Tails.
- Flip again any time.
Worked examples
- Who kicks off
- One flip, heads or tails called in advance. A 50/50 call that both sides can see is often easier to accept than an argument about who chose first.
- Flipping ten times at once
- Runs of four or five identical results are common in ten flips, not a sign the coin is broken — see the note below.
Common use cases
- Settling a simple two-way decision
- Choosing who goes first in a game
- Classroom or sports coin tosses
How this generator works
Each flip reads fresh random bytes from your browser's Web Crypto random generator and maps them to heads or tails with an exact 50/50 split — there is no physics simulation, no bias toward the last result, and no animation deciding anything. Flips are fully independent of one another, which is what makes the tool a genuine coin toss rather than a sequence that tries to even itself out.
Randomness and fairness
Each flip is an independent draw from your browser's cryptographic random number generator, with heads and tails exactly equally likely. Independent means the coin has no memory: after five heads in a row, the next flip is still an even split. A run of the same result feels wrong but is entirely ordinary — in a hundred flips, a run of five or more is more likely than not.
For how randomness is produced across the whole site, see how Generate Random works.
Limitations and good to know
- A real coin has a very slight physical bias and is affected by how it is thrown; this one does not, so it is arguably fairer than the object it imitates.
- Streaks are normal. After five heads in a row the next flip is still exactly 50/50 — the coin has no memory, and expecting tails to be 'due' is the gambler's fallacy.
- Results are not recorded, so a flip cannot be proved after the event. For a contested decision, flip in front of everyone involved.
Common mistakes
- Expecting the results to even out within a short run
- Ten flips very often give seven of one and three of the other. The proportions settle towards half and half over thousands of flips, not over ten, and nothing in the tool nudges them towards an even split.
Frequently asked questions
- Is this really a 50/50 chance?
- Yes. Each flip draws fresh randomness from your browser's Web Crypto generator and splits it evenly between the two outcomes. There is no weighting, no bias toward alternating results, and no attempt to balance the totals over time.
- I got six heads in a row — is it broken?
- No. Six heads in a row happens roughly once in every 64 sets of six flips, so it is common enough to see regularly. Because each flip is independent, the run has no effect at all on what comes next.