Coin Toss

By default, yes. Each flip uses your browser’s random number generator to pick heads or tails with exactly equal probability — just like a well-balanced physical coin. If you move the Coin Bias slider, the odds deliberately shift toward the side you choose, which is useful for games or testing.

Yes — use the Coin Bias slider. At 50% the coin is perfectly fair, but you can lean it from 20% heads all the way to 80% heads. The current odds are shown above the slider, and the percentage updates live with every flip so you can watch the actual results trend toward your chosen bias.

Our coin is drawn with a Neo-Edo design: the Heads side is a golden sun coin, and the Tails side is a silver moon coin. Both faces are rendered entirely in your browser as a 3D object, so the coin visibly spins in space before landing.

The sounds are synthesized live with the Web Audio API — a quick whoosh as the coin leaves your hand and a metallic ding when it lands. Nothing is downloaded and nothing leaves your device, so the entire tool works fully offline. You can mute it anytime with the Sound button.

Yes. Your stats and flip history are stored only in your browser’s localStorage and never sent anywhere. You can clear the history anytime with the Clear button, and there is no account or signup involved.

Yes. With the coin tool focused, just press the Space bar to flip — no need to click the button. The shortcut works anywhere on the page as long as you are not typing in a field.

It is 100% free with no registration, and every flip runs entirely in your browser — no data is ever sent to a server. The stats panel, flip history, bias, and even the sound toggle persist locally between visits, and you can clear or reset everything at any time.