OneToss app iconOneToss · Web tool

Heads or tails,
settled instantly.

Flip a fair virtual coin in one tap and keep a running tally. Free, no sign-in, and no arguing about who goes first.

FreeTrue 50/50No sign-inTap or click

Ready when you are

Heads
0
Tails
0
Flips
0
Tap the coin or press the button · every flip is 50/50

How it works

1

Flip

Press Flip coin or tap the coin itself. The result is settled the moment you press.

2

Read the result

The coin lands on heads or tails, and the answer is announced for screen readers too.

3

Keep score

Heads, tails and the total update as you go — handy for best of three, five or seven.

Questions

Is this coin flip actually fair?

Yes. Each flip asks the browser for a random 32-bit value from its cryptographic random number generator, and an even or odd result picks heads or tails. The two outcomes have exactly the same chance, with no weighting or bias from previous flips.

Is OneToss free?

The web coin flip is free and needs no account. The OneToss iPhone app is also free on the App Store and adds multiple coins, custom designs and long-running stats.

Does the tally save if I reload the page?

No. The heads and tails counts live in the page while it is open, so a reload starts you from zero. Nothing is stored on your device or sent to a server.

Can I use it for best of three?

Yes. Flip as many times as you like and watch the tally — the counts of heads, tails and total flips are there so you don't have to remember the score.

What do heads and tails mean here?

The coin has two sides: heads is the H face and tails is the T face. Before flipping, agree with whoever you're deciding for which side wins.

Does the coin flip work with a keyboard or screen reader?

Yes. The Flip coin button responds to Space and Enter, and the result is announced through a live region, so the outcome isn't only visual.

More free tools

OneToss is not affiliated with Apple. A virtual flip is just as fair as a real coin — you still have to agree on which side wins before you flip.