Coin Flip Simulator

Flip a Virtual Coin

Heads

Tails

Total

Status

Click Flip Coin to get started

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Understanding Coin Flip Simulations

Fair 50/50 Odds

Each flip uses a uniform random number, so heads and tails are equally likely on every single flip.

Running Tally

Track how many heads and tails you've flipped in this session to see how results even out over many flips.

Settle Decisions Fairly

Use a coin flip to make an unbiased 50/50 decision when you don't have a physical coin handy.

Instant & Private

Flips happen instantly in your browser — no data is ever sent to a server.

Why Short Runs Can Look Uneven

Even with perfectly fair 50/50 odds, a small number of flips can easily show a streak of one side — getting 4 heads in a row has roughly a 6% chance and isn't unusual. The tally only reliably approaches a 50/50 split after many dozens or hundreds of flips, a concept known as the law of large numbers.

Key Takeaways

True 50/50 Odds: Every flip is an independent, unbiased coin toss.
Session Tally: Keep track of your heads/tails count across multiple flips.
Client-Side Only: All flips happen locally in your browser — no data is ever sent to a server.

Coin Flip Simulator - Free Online Tool