Coin Flip
Choose how many coins to flip, then press Flip. You see heads or tails for one coin, or the counts, percentages and the full sequence for many. Every flip is a fair 50-50 chance.
Last updated November 4, 2026
1 to 100
Result
Press Flip to toss the coin. Each flip is new and is not stored.
How the coins are flipped
each flip = heads or tails with probability 1/2
percent = count ÷ coins × 100
Each coin is its own draw from your browser’s secure random generator, so it comes up heads or tails with equal chance. Coins never affect each other and earlier flips never influence later ones.
The counts show how many heads and tails came up, and the percentages divide each count by the number of coins. The sequence lists the flips in order, with H for heads and T for tails.
See how we calculate for the formulas, sources and review schedule behind every calculator.
Why many flips rarely split exactly 50-50
With 10 coins, exactly 5 heads happens in 252 of 1,024 equally likely outcomes, about 24.6% of the time. The share of heads gets closer to 50% as you add coins, but the gap in the number of heads can still be several.
A streak of heads does not make tails more likely next. Each flip has a 50% chance whatever came before.
Nothing is stored
Flips happen in your browser and are never saved or uploaded. A shared link carries only the number of coins, so the person who opens it flips their own.
How to use the Coin Flip
- Enter how many coins to flip, from 1 to 100.
- Press Flip. One coin shows heads or tails; several show counts, percentages and the sequence.
- Press Flip again for a new throw, or use Copy, Print and Share.
Worked example
Flipping 10 coins might give 6 heads and 4 tails, which is 60% heads and 40% tails. The chance of exactly k heads in 10 flips is the number of ways to choose them divided by 1,024.
| Heads | Ways | Chance |
|---|---|---|
| 0 or 10 | 1 | 0.1% |
| 2 or 8 | 45 | 4.4% |
| 4 or 6 | 210 | 20.5% |
| 5 | 252 | 24.6% |
Frequently asked questions
Is the coin flip really fair?
Each flip uses your browser’s secure random generator, with heads and tails equally likely. It is a convenient fair flip, not a certified one.
How many coins can I flip at once?
From 1 to 100. Many coins show heads and tails counts, percentages and the sequence.
Does a run of heads make tails more likely?
No. Each flip is independent, so the chance of heads stays 50% however many heads came before.
Is anything stored or shared?
No results are saved or uploaded, and a shared link holds only your number of coins.