Coin flipper
Single flip or a batch simulation with heads/tails distribution.
Runs in this tab. The file stays here.
Coin
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This runs in your browser. Nothing is uploaded.
About Coin flipper
Flip a fair coin once or run a batch simulation with heads and tails counts, all offline.
This coin flip stays in the tab. Nothing is uploaded to ihateonlinetools.com for the calculation. That is the same offline promise as the rest of the site: your numbers, caption, or recipe never need to sit in a third-party form log.
A single flip returns heads or tails. Batch mode runs up to ten thousand flips and shows the distribution so you can see how often a fair coin still looks streaky in a short sample. Randomness is the same crypto path as the password generator.
Use it to settle a binary choice or to teach probability. It will not bias toward the side you want, and it will not phone home with the result. Related tools on this site cover nearby jobs without forcing a signup wall.
How to use Coin flipper
- 1Open /random/coin-flip/ and check the side-panel defaults.
- 2Enter your values or paste your list; the main pane updates.
- 3Copy the result if you need it elsewhere. Closing the tab clears local state unless noted.
What it won't do
- Not professional advice and not a hosted account product.
- Garbage in, garbage out: wrong inputs yield wrong outputs.
Common questions
Does coin flip upload anything?
No. Inputs and outputs stay in the browser process. Sharing features that exist, such as countdown links, only put values you choose into the URL on your device.
What formula or method does coin flip use?
A single flip returns heads or tails. Batch mode runs up to ten thousand flips and shows the distribution so you can see how often a fair coin still looks streaky in a short sample. Randomness is the same crypto path as the password generator.
When should I not rely on coin flip alone?
When a clinician, building code, platform policy, or teacher requires a signed process. This page is a calculator and explainer, not a certificate.
Is coin flip free and offline-capable?
Yes. After the static page loads, the logic runs without calling an external compute API. Return visits may use the service worker cache for the shell.
Related tools
Why this one doesn't upload your file
There is no server to upload to. This page is a static file, and the work happens in your browser using the same graphics and WebAssembly code that renders every other site you visit. Your file is read from disk into memory, processed, and handed back as a download. Once the page has loaded you can disconnect from the network entirely and it keeps working. The longer explanation