Coin Flip — Flip a Virtual Coin Online, Heads or Tails
Total flips
0 Heads
0 0% Tails
0 0% Streak
— Click the button and get heads or tails in under a second. Every flip uses your browser's cryptographic random generator, so both sides have exactly a 50% chance — no patterns, no bias. The tool keeps a running history and live statistics for as many flips as you need.
How it works
- 1 Flip the coin Click the Flip button (or press Enter when it is focused). The coin spins and lands on heads or tails.
- 2 Read the result and stats The result appears under the coin. Total flips, heads and tails counts, percentages, and your current streak update after every flip.
- 3 Reset when you are done The Reset button clears the history and statistics so you can start a fresh series of flips.
Your data stays private
All processing happens entirely in your browser. No files, text, or data are ever sent to our servers. You can disconnect from the internet and this tool will still work.
Frequently asked questions
- Is the coin flip really fair?
- Yes. Each flip reads one random bit from crypto.getRandomValues, the same cryptographic generator browsers use for security keys. Heads and tails each have exactly a 50% probability on every flip.
- Can the coin land on the same side many times in a row?
- Yes, and it should. In 100 fair flips, a streak of 6 or more identical results is more likely than not. Streaks are a normal property of randomness, not a sign of bias — the streak counter lets you watch them happen.
- Does a previous flip affect the next one?
- No. Every flip is independent. After five heads in a row, the chance of a sixth is still exactly 50% — believing otherwise is the gambler's fallacy.
- Is anything sent to a server?
- No. The randomness comes from your own browser and the history lives only on the page. Closing or reloading the tab clears everything.
- Why do the percentages not settle at exactly 50/50?
- Small samples wobble. After 10 flips a 70/30 split is unremarkable; after 1,000 flips the percentages will typically sit within a couple of points of 50. The law of large numbers works slowly.
From the blog
Heads or Tails: What a Fair Coin Flip Actually Looks Like Why real coins are almost fair, streaks are normal, and how a browser flips a coin with a cryptographic random bit. Read the post →Related tools
Random Name Picker Draw one or more fair random winners from a pasted list of names. Random Number Generator Generate random numbers in any range, with no repeats if you want. Random Password Generator Generate strong random passwords with custom length and characters. Stopwatch / Timer Countdown timer and stopwatch with lap times in the browser.