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100% free · no signupRuns in your browser

Coin Flip

Flip a virtual coin with heads/tails history tracking.

Best for: Use it to settle a yes/no, decide who goes first, or break a tie.

Complete guide

Input

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How it's calculated & sources
The Coin Flip uses the standard, deterministic formula, so the same inputs always produce the same result. It runs entirely in your browser, so your inputs are never uploaded. Last reviewed June 2026.

Free & no sign-up · runs entirely in your browser. Results are estimates for general information, not professional advice — verify important decisions with a qualified expert. Last reviewed June 2026.

How it works

Bernoulli trial with p = 0.5. Each flip is independent; previous results don't affect future outcomes (gambler's fallacy).

Example

Flip a coin 3 times → possible outcomes: HHH, HHT, HTH, HTT, THH, THT, TTH, TTT (each 12.5%).

Frequently asked questions

Is it truly 50/50?+

Yes — uses a uniform random generator with equal probability for heads and tails.

Continue your journey

Where people usually head next.

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Random Number Generator
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Roll D4, D6, D8, D10, D12, D20 or D100 dice with animated results.

Complete guide

Quick answers

Short, sourced answers to the questions people (and AI assistants) ask most.

What is Coin Flip?
A coin flip gives a random heads or tails - a fast, fair way to make a two-way decision.
Why does Coin Flip matter?
Each flip is fair and independent. Over many flips the split approaches 50/50, but short runs can streak.
How is Coin Flip calculated?
It picks heads or tails with a 50/50 chance each flip, independently of previous flips.
What are common coin flip mistakes?
Thinking tails is 'due' after several heads - flips are independent.
When should you use the Coin Flip?
Use it to settle a yes/no, decide who goes first, or break a tie.

What is the Coin Flip?

A coin flip gives a random heads or tails - a fast, fair way to make a two-way decision.

How the Coin Flip works

It picks heads or tails with a 50/50 chance each flip, independently of previous flips.

Common mistakes to avoid

  • Thinking tails is 'due' after several heads - flips are independent.
  • Reading meaning into a short streak.
  • Using it for anything that needs a provably fair, audited flip.

Keywords: coin, flip, heads, tails.

Output is pseudo-random and fine for casual use - not for security, cryptography or gambling-critical purposes.

Reviewed by the Free Tools Galaxy editorial team · Updated June 2026 · Calculated privately in your browser.

Frequently asked questions

Is the Coin Flip free to use?+

Yes. Every tool on Free Tools Galaxy is 100% free, runs in your browser and requires no signup.

How accurate is the Coin Flip?+

Coin Flip uses the standard coin flip formula in double-precision arithmetic, so the same inputs always produce the same result and you can verify any figure by hand. It is an educational estimate — real-world outcomes depend on your actual rates, rules and assumptions.

Do you store my inputs?+

No. The Coin Flip runs entirely in your browser. Nothing is uploaded or saved to a server.

Can I use the Coin Flip on mobile?+

Yes — the interface is fully responsive and works on phones, tablets and desktops.

What are common mistakes to avoid?+

The most frequent mistake is mixing units. Double-check your inputs use a single, consistent unit before clicking Calculate.

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Reddit post
Title: I built/used this free coin flip — instant, no signup

Body: Flip a virtual coin with heads/tails history tracking. Try it: https://freetoolsgalaxy.com/tools/coin-flip
LinkedIn post
Coin Flip on Free Tools Galaxy — Flip a virtual coin with heads/tails history tracking. https://freetoolsgalaxy.com/tools/coin-flip
Medium intro
# Coin Flip — the free tool I keep coming back to

Flip a virtual coin with heads/tails history tracking.

Try it: https://freetoolsgalaxy.com/tools/coin-flip
Quora answer
The fastest way is to use a free in-browser coin flip: https://freetoolsgalaxy.com/tools/coin-flip. Flip a virtual coin with heads/tails history tracking.

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Free embed code for blogs, docs and dashboards. Every embed sends a backlink home — helping you and the galaxy grow together.

HTML iframe
Drop into any site — auto-resizes to its content height, theme-aware.
<iframe src="https://freetoolsgalaxy.com/tools/coin-flip?embed=1" title="Coin Flip" loading="lazy"
  style="width:100%;height:600px;border:0;border-radius:16px;background:#0b1020"
  allow="clipboard-write"></iframe>
<script>window.addEventListener("message",function(e){if(e.data&&e.data.type==="ftg-embed-height"){document.querySelectorAll("iframe").forEach(function(f){if(f.contentWindow===e.source){f.style.height=e.data.height+"px";}});}});</script>
<p><a href="https://freetoolsgalaxy.com/tools/coin-flip" target="_blank" rel="noopener">Powered by Coin Flip on Free Tools Galaxy</a></p>
Responsive wrapper
Aspect-locked container — good for blog post bodies.
<div style="position:relative;padding-bottom:75%;height:0;overflow:hidden;border-radius:16px">
  <iframe src="https://freetoolsgalaxy.com/tools/coin-flip?embed=1" title="Coin Flip" loading="lazy"
    style="position:absolute;inset:0;width:100%;height:100%;border:0" allow="clipboard-write"></iframe>
</div>
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Paste in a custom-HTML block or markdown file.
[Coin Flip — free online tool](https://freetoolsgalaxy.com/tools/coin-flip)

<iframe src="https://freetoolsgalaxy.com/tools/coin-flip?embed=1" width="100%" height="600" frameborder="0"></iframe>
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Minimal credit link — best for sidebars and footers.
<a href="https://freetoolsgalaxy.com/tools/coin-flip" target="_blank" rel="noopener">Try the free Coin Flip</a>

Share-to-Grow Kit

Pre-written, ready-to-paste posts for every major channel. Help others discover this tool — and earn backlinks.

Title
I built a free pregnancy due date calculator that works instantly in the browser — no signup, no ads in your face
Body
Hey r/[subreddit],

I kept needing a quick pregnancy due date calculator and most options online were slow or behind paywalls, so I built one that:

• Runs 100% in your browser (your data never leaves your device)
• No signup, no email wall, no popups
• Loads in under a second on mobile

It covers the standard pregnancy due date use cases (pregnancy, due, date, baby) and links out to the formula + worked examples if you want to learn the math.

Link: https://freetoolsgalaxy.com/tools/pregnancy-due-date-calculator

Happy to take feedback — what's missing?
Post to a relevant subreddit (e.g. r/InternetIsBeautiful, r/webdev, r/productivity). Avoid spammy subs.
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