Truly random, provably fair
Every toss uses your browser's cryptographic random number generator, the same source used to create secure passwords, not a predictable formula.
Truly random, 50/50, free
Flip a Coin Heads or tails, decided in one tap
Flip a coin online with a realistic 3D toss and a cryptographically random result. Call heads or tails, play best of 3, flip up to 100 coins at once or simulate a million tosses.
- Crypto-secure fairness
- Exactly 50/50
- Stats and streaks
- Works on any device
Coin flipper
Your call
Tap the coin
Heads or tails?
Every toss is 50/50 and truly random.
Press Space or tap the coin to flip.
Your stats
Flips0
Heads00%
Tails00%
Streak-
Longest-
Your calls-
History (newest first)
Your flips will appear here.
Customize
Choose how many coins, then flip them all at once.
- Running % heads
- 50% (perfectly fair)
- 95% expected range
Why it's better
Why this is the best way to flip a coin online
Most coin flippers give you a spinning picture and a word. This one is built to be provably fair, fun to use and useful for real decisions, games and probability lessons.
Realistic 3D coin toss
A spinning coin with a real edge, a toss arc, a shadow and a landing chime. Tap the coin, press Space or hit Flip coin.
Call it and keep score
Call heads or tails before each flip and see how often you guess right, with streaks, percentages and a full flip history.
Custom heads and tails
Rename the sides to Pizza and Tacos, Team A and Team B or Yes and No, and the result shows your option in big letters.
Best of 3, 5 or 7
Settle bigger decisions with a match mode that keeps the running score and celebrates the winner automatically.
100 coins and a million-flip simulator
Flip up to 100 coins at once, or simulate up to 1,000,000 tosses and watch the percentage of heads settle toward 50% on a live chart.
How it compares with typical coin flippers
| Feature | This coin flipper | Typical coin flip sites |
|---|---|---|
| Source of randomness | Cryptographic (crypto.getRandomValues) | Often not stated |
| Call heads or tails with accuracy score | Yes | Rarely |
| Custom labels for each side | Yes | Sometimes |
| Best of 3, 5 or 7 | Yes | Rarely |
| Multiple coins at once | Up to 100 | Often up to 10 |
| Large simulation with chart | Up to 1,000,000 flips | Rarely |
| Streaks, history and copyable results | Yes | Sometimes |
| Sign-up | Never | Varies |
How to use
How to flip a coin online
It takes one tap. The extra options are there when you want them.
Need to pick from more than two options? Try the random name picker wheel or the random number generator.
Set up your coin (optional)
Type what heads and tails mean, pick a coin style and choose Single flip or a Best of 3, 5 or 7 match.
Make your call
Choose Heads or Tails under Your call if you want to test your luck. Leave it on No call for a plain toss.
Flip the coin
Tap the coin, click Flip coin or press the Space bar. The coin spins through the air and lands on a random side.
Read the result and stats
The winning side appears in large text with your custom label. Stats show totals, percentages, streaks and your call accuracy.
Go bigger if you like
Switch to Multiple coins to toss up to 100 at once, or open the Simulator to run up to a million flips in a second.
The math
Coin flip probability explained
A fair coin has two equally likely outcomes, so the chance of heads on any single flip is 1 in 2, or 50%. The same is true for tails.
Every flip is independent: the coin has no memory. After five heads in a row, the next flip is still exactly 50/50. Believing that tails is "due" is called the gambler's fallacy.
Over a few flips, results often look lopsided. In 10 flips, getting exactly 5 heads happens only about 24.6% of the time, while landing between 4 and 6 heads happens about 65.6% of the time. The more you flip, the closer the share of heads gets to 50%, which you can watch happen in the Simulator.
| Same side in a row | Chance for a chosen side | As odds |
|---|---|---|
| 2 | 25% | 1 in 4 |
| 3 | 12.5% | 1 in 8 |
| 4 | 6.25% | 1 in 16 |
| 5 | 3.13% | 1 in 32 |
| 7 | 0.78% | 1 in 128 |
| 10 | 0.098% | 1 in 1,024 |
Is a real coin toss really 50/50?
Almost, but not quite. A large study of 350,757 coin flips found that a real coin lands on the same side it started about 50.8% of the time, because of a slight wobble in the toss. A virtual coin has no starting side and no wobble, so this coin flip is exactly 50/50.
Fair decisions
Best of 3 and other fair ways to decide
A single toss is perfect for small choices. For bigger ones, a short match feels fairer to everyone involved.
- Best of 3: keep flipping until one side wins twice. It is over in two or three flips and softens the sting of one unlucky toss.
- Best of 5 or 7: first to three or four wins. Great for settling who gets the front seat for a whole road trip.
- Choosing between three people: everyone flips at once. If one person's coin differs from the others, they are the odd one out. If all match, flip again; each round works 75% of the time.
- Who goes first: one person calls while the coin is in the air, just like the toss before a cricket or football match.
- More than two options: use a wheel or number picker instead, so every option has an equal chance.
Benefits
Benefits of a virtual coin toss
No coin in your pocket? No problem. An online coin flip is faster, fairer and easier to prove than a real one.
Perfectly balanced
No worn edges, no same-side bias and no skilled flicks. Heads and tails are exactly equal on every toss.
Instant and anywhere
Works on phones, tablets and computers, even over a video call where everyone can see the same result.
A record you can share
Copy the result, totals and full history in one click to paste into a group chat, email or classroom report.
Great for teaching
Show probability, streaks and the law of large numbers with real data from the multi-coin mode and the simulator chart.
Popular reasons to flip a coin
- Who goes first
- Cricket and football tosses
- What to eat tonight
- Settling friendly arguments
- Choosing teams or sides
- Classroom probability lessons
- Board and party games
- Yes or no decisions
FAQ
Flip a coin FAQ
Is this online coin flip truly random?
Yes. Each result comes from crypto.getRandomValues, a cryptographically secure random number generator built into your browser. Heads and tails each have exactly a 50% chance, and no flip affects the next.
What are the odds of getting heads?
The odds are 1 in 2, or 50%, on every flip. Over many flips the share of heads moves close to 50%, but short runs often look uneven.
Why did I get the same side several times in a row?
Streaks are normal in random sequences. Three heads in a row happens 12.5% of the time and five in a row about 3% of the time. The next flip is still 50/50.
Can I flip more than one coin at once?
Yes. Open the Multiple coins tab, choose from 2 to 100 coins and flip them together to see how many land heads and tails.
How does best of 3 work?
The coin is flipped until one side wins two flips. Choose Best of 3, 5 or 7 in Match mode and the tool keeps the score and announces the winner.
Can I change heads and tails to my own options?
Yes. Type any two choices, such as Pizza and Tacos, in the Heads means and Tails means fields. The result shows your option instead of heads or tails.
Is a real coin toss 50/50?
Almost. A study of 350,757 flips found a real coin lands on the same side it started about 50.8% of the time. A virtual coin has no starting side, so it is exactly 50/50.
Which side of a coin is heads?
Heads is traditionally the side with a portrait or the main emblem, and tails is the reverse. On this coin, heads shows a star and the letter H, and tails shows the letter T.
Can I flip a coin with my keyboard?
Yes. Press the Space bar while the coin is on screen, or tab to the coin and press Enter. On a phone, just tap the coin.
Ready? Flip the coin
Make the call, flip the coin and let chance decide. Fair every time, free forever and ready on any device.
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