Coin Flip Tool
Calculate coin flip instantly in your browser.
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What this tool does
Calculate coin flip instantly in your browser. Independent fair virtual flips; Generate again for new results.
How to use the Coin Flip Tool
- Enter or select number of flips.
- Read the calculated result; change any measurement to compare alternatives.
Formula
each flip samples one uniform bit with Web Crypto
- count
- Number of flips
Independent fair virtual flips; Generate again for new results.
Worked example
For coin flip tool, the following measurements illustrate the exact method: Number of flips: 1.
Inputs
- Number of flips1
Result
- Random resultA fresh cryptographic result is generated locally in the calculator above.
Results explained
- Flips
- Flips from the formula above. Independent fair virtual flips; Generate again for new results.
- Heads
- Heads from the formula above. Independent fair virtual flips; Generate again for new results.
Frequently asked questions
each flip samples one uniform bit with Web Crypto
Independent fair virtual flips; Generate again for new results.
Where mathematically meaningful, yes. Fields specify permitted ranges and undefined operations display an error.
Exact integer calculations use safe integers; decimal calculations use browser floating point, so small rounding differences can occur.
All values remain in your browser and are never uploaded.