Statistics Tools

Confidence Intervals

Calculate confidence intervals for population means and proportions with customizable confidence levels.

📚 Learn How to Use This Calculator

Learn the fundamentals of confidence intervals, when to use t-distribution vs z-distribution, and how to interpret your results with real-world examples.

Confidence Interval Calculator

Choose calculation type and provide your data to compute confidence intervals.

⭐Advanced: Upload CSV File(optional)

Results

Configure parameters and calculate to see results

Configure your parameters and click "Calculate" to see the confidence interval