HomeCalculatorsMathematics & Science CalculatorsConfidence Interval CalculatorConfidence Interval Calculator Get precise confidence intervals for means, proportions, or differences of means with our dynamic, interactive Confidence Interval Calculator. Ideal for quick, reliable statistical analysis.Mean (Z/T)ProportionDifference of MeansConfidence Interval for Mean Sample Mean ( x̄ ) Sample Size (n) Standard Deviation (σ or s) Confidence Level (%) Population Standard Deviation Known? Sample Std. Dev. (Use T)Population Std. Dev. (Use Z) CalculationValueConfidence Interval for Proportion Number of Successes (X) Sample Size (n) Confidence Level (%) CalculationValueDifference of Means (Independent Samples) Mean 1 ( x̄₁ ) Mean 2 ( x̄₂ ) Std. Dev 1 (s₁) Std. Dev 2 (s₂) Sample Size 1 (n₁) Sample Size 2 (n₂) Confidence Level (%) CalculationValue More ToolsAntiderivative CalculatorArithmetic Sequence CalculatorCircumference CalculatorDensity CalculatorDistance Formula CalculatorFactor CalculatorGPA CalculatorHalf Life CalculatorHcf CalculatorInflation CalculatorKwh CalculatorLcm CalculatorLimit CalculatorMass CalculatorMatrix Multiplication CalculatorP Value CalculatorPermutation CalculatorPrime Factorization CalculatorProbability CalculatorPythagorean Theorem CalculatorRight Triangle CalculatorSample Size CalculatorScientific Notation CalculatorSlope CalculatorSquare Footage CalculatorTriangle Calculator
