BrowserTools

Coin Flip

Heads or tails with flip statistics

By Guga — BrowserTools maintainer, Tbilisi, Georgia Updated 2026-09-21
Free Private No uploads
What is Coin Flip?

Each press picks heads or tails from a single crypto draw, animates for about six-tenths of a second, then updates three counters: total flips, heads with its share, and tails with its share. Percentages are shown to one decimal place and read as a dash until the first flip, so an empty panel is never a misleading 0%. The counters live for the page's lifetime and are not persisted anywhere, which is worth keeping in mind if you are demonstrating a run — the record resets when you navigate away. Point worth being blunt about: a coin flip is a 50/50 draw, not a way to make a decision. It is good for breaking a tie where neither option is better, and useless where one outcome is.

Flip a virtual coin and let chance decide. Track heads/tails statistics across flips — useful for tiebreaks, quick decisions and probability demonstrations.

Private Coin Flip In Your Browser

Coin Flip is processed locally with client-side JavaScript. Your files never touch a server, and there is no queue to wait in.

Step-by-Step

How to use Coin Flip

1

Click the coin itself or press Flip coin.

2

Wait for the six-tenths-second animation to finish and the face is committed.

3

Read the Total flips, Heads and Tails panels, which include live percentages.

4

Reload the page to reset the record; nothing is stored between visits.

Key Capabilities
  • Single crypto draw per flip, with no modulo bias between the two faces.
  • Running totals for total flips, heads and tails.
  • Live percentage for each side to one decimal place, shown as a dash before the first flip.
  • A 600 ms animation that also prevents a second flip from stacking on the first.
Common Use Cases
  • Two colleagues with an equal claim on the last slice of pizza flip for it instead of negotiating.
  • A teacher flipping 200 times and plotting the results demonstrates how quickly a 50/50 process deviates from even.
  • A team lead breaks a tie between two equally good sprint tasks with a recorded flip rather than a judgement call.
Clear Answers

Frequently Asked Questions

Can I use this to make a real decision?
As a tiebreaker, yes — where the options are genuinely equal and you have stopped trying to reason about them. As a way to answer whether to take a job, sign a lease or start a treatment, no. Chance carries no information about which choice is better for you.
Is it exactly fifty-fifty?
Over enough flips, yes — that is what the statistics panel exists to show. Single flips and short runs will look lopsided far more often than people expect, which is the point of running a few hundred and watching the bars settle.
Does the flip counter reset on its own?
It resets when the page is reloaded or navigated away from. There is no stored record, so copy the numbers elsewhere if you are keeping a tally you care about.