Confidence Interval Calculator

What is a Confidence Interval?

A confidence interval provides a range of values within which the true population parameter is likely to fall, based on a given level of confidence. It’s widely used in statistics to estimate population parameters.

How to Use This Tool?

1. Enter the sample mean, standard deviation, and sample size in the input fields above.
2. Provide the confidence level (e.g., 95 for 95%).
3. Click “Calculate” to get the confidence interval range.