TidyFigure

Flip a Coin

  • 100% free
  • No sign-up
  • Runs in your browser

Tap the coin or the button to flip. Each toss has an exactly 50% chance of heads and 50% of tails, decided by a secure random number. Flip 10 or 100 times at once to see how the results even out, and watch the count of heads, tails and the longest streak.

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Your flips

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Is a virtual coin flip fair?

Yes, and in one way it's fairer than a real coin. Studies of real coin tosses have found a small bias: a flipped coin lands on the same side it started on slightly more often than half the time, about 51%. This virtual coin uses your browser's cryptographically secure random generator, so heads and tails are exactly equally likely on every flip.

Each flip is independent

A coin has no memory. After five heads in a row, the next flip is still 50/50. Believing tails is "due" is called the gambler's fallacy. Over many flips the share of heads moves towards 50%, but the gap in raw numbers can still grow: 520 heads and 480 tails in 1,000 flips is perfectly normal.

Chance of heads = 1 ÷ 2 = 50% Chance of n heads in a row = (1 ÷ 2)ⁿ 3 in a row = 12.5% 5 in a row = 3.1% 10 in a row ≈ 0.1%

Streaks happen more than you'd think

In 100 flips, the longest run of the same side is usually 6 or 7. People asked to write down "random" coin flips by hand rarely include runs longer than 4, which is one way teachers can tell a real experiment from a made-up one. Try "Flip 100 times" and look at the longest streak.

Ways to use a coin flip

  • Settle a decision between two options. Bonus: if you feel disappointed by the result, you've learned which option you really wanted.
  • Sports: decide who kicks off, serves first or picks ends.
  • Games: who goes first, or as a replacement for a lost coin.
  • Classrooms: run probability experiments with 10 or 100 flips at a time.

Heads or tails?

On most real coins "heads" is the side with a portrait or national emblem, and "tails" is the other side. The name dates back centuries; British coins traditionally showed the monarch's head on the front.

Frequently asked questions

Is this coin flip really 50/50?

Yes. Each flip uses a secure random number, giving heads and tails exactly equal chances.

What are the odds of getting heads 3 times in a row?

1 in 8, or 12.5%. Each flip is 1/2, so three in a row is 1/2 × 1/2 × 1/2.

If I get heads 5 times, is tails more likely next?

No. Every flip is independent, so the next one is still exactly 50/50.

Can I flip a coin many times at once?

Yes. Use “Flip 10 times” or “Flip 100 times” to see the totals and the longest streak instantly.

Which side is heads?

Heads is the side with the portrait or main emblem. Tails is the other side.

Last updated October 2026 · More generators & random