Coin Flip
Flip a fair virtual coin once or thousands of times with a live heads/tails tally.
Press Generate to flip.
Tip: press Space or Enter to generate, C to copy.
Crypto-grade fair randomness.How it works
What is the Coin Flip?
A coin flip is the simplest fair decision there is: two outcomes, each with a 50 percent chance. This online coin flipper gives you a real flip animation and a genuinely fair result drawn from your browser's cryptographic random source, not a predictable formula. Beyond a single flip, you can flip 10, 100, or 1,000 coins at once and watch a running heads-versus-tails tally with percentages, run a best-of-N series to decide a winner, and rename the sides to anything you like, such as "Pizza" versus "Tacos." A history log keeps your recent flips, and a short probability explainer shows how a large number of flips converges toward an even split.
How to use the coin flip
- Choose how many coins to flip: 1, 10, 100, or 1,000.
- Optionally rename the two sides or switch on best-of-N mode.
- Press Generate (or the spacebar) to flip.
- Read the result and the running heads/tails tally.
- Copy the outcome or review your flip history below.
Use cases
Settling a decision
Make a quick, unarguable choice between two options when nobody can agree.
Kickoffs and turn order
Decide who goes first in a game, match, or debate with a fair toss.
Teaching probability
Flip hundreds of coins at once to show students how observed frequency approaches the theoretical 50/50.
Best-of series
Run best of 3, 5, or 7 to resolve a longer contest rather than a single toss.
Custom two-way picks
Rename the sides to your two real options so the result reads plainly, like "Stay" or "Go."
Frequently asked questions
Is this coin flip actually fair?
Yes. Each flip has an exactly equal chance of heads or tails because it uses cryptographic randomness with no bias toward either side.
Can I flip many coins at once?
Yes. Flip 10, 100, or 1,000 coins in a single action and see the total heads, tails, and their percentages.
What is best-of-N mode?
It runs a series of flips and reports which side won the majority, useful for settling something over several rounds.
Can I rename heads and tails?
Yes. Set custom labels so the coin shows your two actual choices instead of heads and tails.
Why do large batches trend toward 50/50?
With more flips, random variation averages out, so the observed ratio moves closer to the true probability of one half.
Is my flip history saved?
Recent flips are kept locally in your browser and can be cleared at any time.
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