About CoinToss
CoinToss (serving cointoss.uk and cointossus.com) is a fast coin toss tool that generates each result in your browser. Whether you need to settle a pub debate, decide who kicks off a football match, or simply break a tie between two choices, the site gives you a fair result in seconds — no account, no download, no physical coin required.
Our mission
We built CoinToss because flipping a real coin is not always practical. You might be on your phone without change in your pocket, running a classroom activity, or organising a sports match where a quick, impartial decision is needed. Our goal is to make that decision as fast and as fair as possible, with zero friction between opening the page and getting your result.
The site is designed to feel like a real coin toss: you see the coin, you trigger the flip, and you watch the animation land on heads or tails. The experience is immediate, visual, and satisfying — just like tossing a physical coin, but without the fumbling.
How the tool works
At its core, cointoss.uk uses your browser's built-in cryptographic random number generator (crypto.getRandomValues()) to produce each result. This is the same standard used by security-critical applications and provides significantly stronger randomness than the more common Math.random() function.
The animation you see is purely visual — the result is already determined before the coin starts spinning. This means the flip is genuinely random and cannot be influenced by timing, device speed, or network conditions. You can read our deep dive on cryptographic randomness for the full technical explanation.
Multiple modes for different needs
The site offers five distinct modes, each tailored to a specific use case:
- Classic heads or tails — the standard fifty-fifty flip for everyday decisions.
- Best of three — three automatic flips with a majority winner, useful when one toss feels too abrupt.
- Custom choices — replace heads and tails with any two options: tea or coffee, pub or home, A or B.
- Football toss — decide kick-off or ends before a match, training session, or five-a-side game.
- Cricket toss — determine who bats or bowls first with a quick, fair decision.
Each mode can also be accessed as a standalone page, so you can link directly to the one you need without navigating through the main tool.
Privacy and data
cointoss.uk does not require an account. Your flip history, coin preferences, and sound settings are stored locally in your browser using localStorage. When you flip, the site also sends an anonymous event containing the result, mode, coin set, and timestamp to maintain overall counters. The "Reset stats" button clears local flip statistics and recent history; browser settings can clear stored preferences.
We use Google AdSense to display advertisements, which may set cookies for ad personalisation. You can opt out of personalised advertising through Google's Ads Settings. For full details, see our privacy page.
Who runs the site
cointoss.uk is maintained by Terry Day, who is responsible for the website and its coin-toss tools. The public contact address is hello@cointoss.uk.
The Obscure Coins journal is general-interest reading maintained by the site operator. It is not a substitute for professional numismatic, historical, financial, or legal advice. We welcome corrections and source suggestions by email.
Why coin tossing matters
At its heart, a coin toss is about fairness. When two options are equally valid and no one can claim an advantage, a flip provides a neutral arbiter that everyone accepts. That principle has survived for millennia — from ancient Greek lots to modern sports rituals — because it works. It is simple, transparent, and impossible to argue with once the coin lands.
In an era of digital currencies and contactless payments, physical coins are becoming less common in everyday life. cointoss.uk keeps the tradition alive in the virtual space, ensuring that the age-old practice of settling a choice with a flip remains accessible to anyone with a browser.
Contact
hello@cointoss.uk