Flip a Coin
Heads or tails, settled in one tap. Flip one coin or up to ten, keep a running tally of the session, and show the seed so nobody can say you flipped until you liked the answer.
- Free
- No sign-up
- Runs in your browser
Someone shared this result with you. It was made with Flip a Coin, free on VISU, no sign-up.
Tap the coin or press Space to flip.
This session
Your flips and rolls show up here. Nothing is kept after you close the page.
Check a seed
Uses the mode, the number of coins or dice and the sides chosen above. The same seed always gives the same result.
Everything runs in your browser. Nothing is uploaded or saved.
A dice roller on the same page
Switch to Dice when the board game lost its dice: roll 1 to 6 dice with 4, 6, 8, 10, 12 or 20 sides and get the total at once. A d6 shows real pips, the others show the number. Rolls come from a seed too, so a shared roll can be checked.
Running a game night or a group?
Put the rules, the results and your links on one VISU Link page, and share a single link with everyone. Free to start.
Create your VISU Link See VISU LinkHow to use it
- Pick how many coins to flip, from 1 to 10.
- Tap the coin, the button, or press Space. The result is drawn from a fresh seed and the coin lands on it.
- Watch the tally: heads, tails and the share of each across the session.
- Copy the result, download the image or share a link that shows the same flip with its seed.
Examples
Who kicks off
One coin, one tap, in front of both captains. The seed under the result shows it was a single flip, not the best of three.
Settle a tie in a group chat
Flip, then share the link in the chat: everyone opens the same result with the same seed instead of a screenshot.
Probability in class
Flip 10 coins at a time for a few minutes and read the tally: students see the share of heads drift toward one half as the count grows.
Add this tool to your site
Put this tool on your blog, store or club site. It runs inside your page, free, with no account, and a small "by VISU" credit line under it.
Questions
Is the coin fair? Is it really 50/50?
Yes. Each coin is drawn from your browser's cryptographic random generator through a published algorithm, with exactly two outcomes of equal weight. Runs like four heads in a row happen with a fair coin too: each flip does not remember the last one.
How does the seed prove the flip?
Every flip starts from a new seed, shown under the result with the time. The seed decides the outcome before the coin moves. Type it in "Check a seed" with the same number of coins and you get the same result, so anyone can confirm what came out.
Can I flip several coins at once?
Yes, up to 10. Each coin is shown with its side, and the page counts heads and tails for that flip and for the whole session.
Can I roll dice here too?
Yes. Switch the mode to Dice to roll 1 to 6 dice with 4, 6, 8, 10, 12 or 20 sides. The total shows right away and the rolls go into the session history.
Is my history saved?
No. The tally lives in the page while it is open and is gone when you close it or press "Clear history". Nothing goes to a server or to your browser storage.
What does the share link contain?
The mode, the number of coins or dice, the sides, the seed and the time, written into the link itself (the part after #). The result is rebuilt from the seed when someone opens it.
Does the animation respect reduced motion?
Yes. If your device asks for reduced motion, the coin shows the result at once with no spin.