Home/Statistics Calculators

📉 Statistics Calculators

9 free statistics calculators for students, researchers, and data analysts.

∑
Statistics Calculator
Mean, median, mode, range, variance, std dev from any data set.
 σ
Standard Deviation
Population σ and sample s standard deviation with step-by-step.
 x̄
Mean Median Mode Range
Calculate all central tendency measures from a data set.
 P
Probability Calculator
Single event, multiple events, conditional probability.
 Z
Z-Score Calculator
Z-score and percentile from mean and standard deviation.
 CI
Confidence Interval
95% and 99% confidence intervals for proportions and means.
 n
Sample Size Calculator
Required sample size for surveys and hypothesis tests.
 C(n,r)
Permutation & Combination
nPr and nCr calculations with factorial breakdown.
 1,2,3
Number Sequence
Arithmetic and geometric sequence sum and nth term.