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  • Skip Navigation LinksBinomial Probability Confidence Interval Calculator

Binomial Probability Confidence Interval Calculator

Compute the 90%, 95%, and 99% confidence intervals for a binomial probability using the Clopper-Pearson (exact) method, given the total number of trials and the number of successes. Knowing the confidence interval for a binomial probability can be very useful for analytics studies that rely on binomial experiments.

Please provide the necessary values, and then click 'Calculate'.

Number of successes:
Number of trials:
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