Open the sign fullscreen and click, tap or press Space. On a live screen, press Flip on your phone and every screen flips together.

Can the same side come up twice in a row?

Yes. Each flip is independent, so Heads can land several times before Tails appears.

It uses the random numbers built into your browser, which is fair enough for games and decisions. It is not certified randomness and must not be used for gambling or betting.

OwnScreen

Coin flip

Flip a coin on the big screen and let it land. It spins and shows Heads or Tails in giant type, so the whole room sees the call. Free, with no app.

Start Open fullscreen Customize in the editor

Free, no account needed. The link holds the whole sign.

A coin toss everyone can see

Settle who goes first, break a tie or start a game without hunting for a coin. The result fills the screen, so nobody has to trust whoever is holding it.

The flip uses the random numbers your browser provides. That is plenty for a game or a decision, but it is not certified or audited randomness, and it is not meant for gambling or betting of any kind.

Put it on a TV

Make it above. The preview is exactly what the screen shows.
Open it on the screen. Press Open fullscreen on that device, or send yourself the link. For a TV with an account, open ownscreen.com/tv and enter its code on your phone.
Leave it running. It fits any screen size and asks the screen to stay on.

Questions

How do I flip it?: Open the sign fullscreen and click, tap or press Space. On a live screen, press Flip on your phone and every screen flips together.
Can the same side come up twice in a row?: Yes. Each flip is independent, so Heads can land several times before Tails appears.
Is this a fair coin?: It uses the random numbers built into your browser, which is fair enough for games and decisions. It is not certified randomness and must not be used for gambling or betting.