About Us

Last updated 2026-11-09

StatisticsCalc is a free collection of statistics and math calculators designed to show the working as well as the answer. Each tool pairs a calculator with a clear explanation, the formulas used, a worked example and a chart.

How we build and check calculators

Calculations run in your browser using standard formulas. We test each calculator against hand-worked examples and known reference values, and the worked example on every page is generated by the calculator itself so it always matches.

The results of this testing are public: see the accuracy verification page, where our calculators are compared line by line with SciPy and exact reference values.

Corrections

If you find an error or have a suggestion, please contact us. We review every report.