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Statistics Calculators
All statistics calculators, free and private.
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7 calculators
Probability Calculator
Simple probability, at-least-once and combined independent events.
Use toolStandard Deviation Calculator
Mean, sample & population standard deviation for any data set.
Use toolZ-Score Calculator
Z-scores, percentiles and raw-value conversion for any data.
Use toolBinomial Distribution Calculator
Binomial probabilities: exactly, at most and at least k successes.
Use toolConfidence Interval Calculator
Confidence intervals for means and proportions with margin of error.
Use toolCorrelation Coefficient Calculator
Pearson r, r² and covariance for paired data.
Use toolLinear Regression Calculator
Least-squares line of best fit with R² and predictions.
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Private by design
Your data never leaves your device.
Every calculation on this site runs in your browser using vanilla JavaScript. Nothing is uploaded, stored or tracked.
- 100% local, client-side calculations
- No data stored on any server
- No tracking, no analytics, no ads scripts
- Works offline once loaded