Online Calculators > Math Calculators > Confidence Interval Calculator

Confidence Interval Calculator

Confidence Interval Calculator to calculate the margin of error based on the sample size and confidence level. The 95% confidence interval calculator is calculated using the sample size, sample mean, standard deviation, and 95% confidence level. You can change the confidence level to 90%, 99% or others.

95% Confidence Interval Calculator

Sample Size (n)
Sample Mean (x)
Standard Deviation (s)
Confidence Level

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