Confidence Interval Calculator

Calculate confidence intervals for your data sets easily with our free online confidence interval calculator.

Sample Size (n)

Sample Mean (X̄)

Standard Deviation (σ or s)

Confidence Level (%)

Frequently Asked Questions

What is a confidence interval calculator?

A confidence interval calculator is a statistical tool that computes the range within which a population parameter is expected to lie, based on sample data.

Confidence Interval Calculator

Frequently Asked Questions

What is a confidence interval calculator?

How does a confidence interval calculator work?

What inputs are required to use a confidence interval calculator?

Can confidence intervals be used in hypothesis testing?