Math & Statistics Calculators
Statistical analysis tools for data science, research, and mathematical problem solving. Free, instant results.
Standard Deviation Calculator
Calculate mean, variance, and standard deviation for any data set. Supports both population and sample standard deviation.
Use calculatorAverage Calculator
Calculate the mean, median, and mode of any set of numbers instantly.
Statistics Calculator
Full descriptive statistics — mean, median, mode, range, variance in one tool.
T-Test Calculator
Perform one-sample, two-sample, or paired t-tests and get p-values instantly.
Chi Square Calculator
Calculate chi-square test statistics and p-values for categorical data analysis.
P Value Calculator
Convert test statistics to p-values for z-tests, t-tests, chi-square, and F-tests.
Trigonometry Calculator
Calculate sine, cosine, tangent, and inverse trig functions with angle conversion.
Percentage Calculator
Calculate percentages, find what percent one number is of another.
Percentage Change Calculator
Calculate the percentage increase or decrease between two values.
Percentage Increase Calculator
Find the result after applying a percentage increase to any number.
About Our Math & Statistics Calculators
Whether working through a stats assignment or checking percentage calculations, our maths tools give instant answers with clear working. All calculators support decimal inputs and provide step-by-step results where relevant.
The Standard Deviation Calculator and T-Test Calculator are the most used for statistics coursework. The Percentage Calculator is popular for everyday use across all ages.