Free Coin Flip
Coin Flip tosses a virtual 3D coin and gives heads or tails with exactly 50% odds, using one unbiased random bit from your browser's cryptographic generator. It keeps a running tally with percentages, tracks your current and longest streaks, and can flip up to 100 coins at once. Press Space to flip.
- Odds:
- 50% heads, 50% tails
- Batch:
- Up to 100 coins at once
- Shortcut:
- Space to flip
- Price:
- Free
- Runs:
- Locally, in your browser
- Uploads:
- None: files never leave your device
- Account:
- Not needed
Quick answers
Is the coin flip fair?
Yes. Every flip uses your browser's cryptographic random generator, so heads and tails each have exactly a 50% chance.
Processed on your device: your files are never uploaded. How it works
Network activity in this tab
What this page has requested since you opened the site in this tab. An upload is any request that sends data: POST, PUT, PATCH or a request with a body.
No uploads: nothing has been sent from this page.
No network requests yet.
To see every request, open your browser's developer tools (Network tab).
How to use the Coin Flip
- Click “Flip the coin” or press Space.
- See the result, the running tally with percentages and your current and longest streaks.
- Flip up to 100 coins at once for a quick summary, or reset the tally to start over.
Credits & open source
Built from scratch on web standards. Thank you to the people who make these projects.
Web platform APIs used: Web Crypto, Keyboard Events, localStorage.
Full license texts: third-party notices · all credits
Frequently asked questions
Why do I see long streaks?
Streaks are normal in random sequences: in 100 flips, a run of 6 or 7 identical results is common.