Coin flip
Flip coins multiple times to count front and back results and counts.
Input
The example value has been entered. Check it immediately or change the value.
Input is processed in the browser. Refreshing returns a sample value.
Result
Check or change the value using the example value result.
Browser uses Web Crypto random numbers. Generation results are not saved, and the fairness of the draw is not publicly verified.
Share result
Share the tool link and result text together. No URL is included in the result. Check the below content and then share it.
Calculation·conversion criteria
Throw coins multiple times to count the number of faces and reverse sides.
Input example
When rolling the die 10 times, the sum of heads and tails = 10
When rolling the die 10 times, the sum of heads and tails is 10. Even if 5 rolls don’t occur, it’s not an error, and each result is shown in order.
How to use
- Use the provided example value or replace the number of throws field.
- Click Verify result and check the following result.
- Result can be copied if needed.
Frequently Asked Questions
If the front side appears repeatedly, will the back side appear better next time?
No. Since each trial is extracted independently, the next probability does not change due to previous results. In small trials, the number of sides may vary significantly.
Calculation criteria and reference materials
- W3C — Web Cryptography
Browser random number API. Not a data source for verifying the fairness of individual draw results.
Verification of calculation criteria: · Calculation·verification principles · Report errors