Math & Numbers
Compare means across three or more independent groups with a one-way ANOVA F test
one-way-anova-calculatorMath & Numbers
Run a one-proportion Z test from success count, trial count, and hypothesized population proportion
one-proportion-z-test-calculatorMath & Numbers
Run paired-sample t tests from before and after values or precomputed paired differences
paired-t-test-calculatorMath & Numbers
Run a one-sample t test from raw data or summary statistics, including p-value and confidence interval
one-sample-t-test-calculatorMath & Numbers
Calculate one-tailed or two-tailed p-values for Z, t, chi-square, and F test statistics
p-value-calculatorMath & Numbers
Calculate Q1, median, Q3, interquartile range, and optional outlier fences for a numeric dataset
quartile-calculatorMath & Numbers
Calculate the statistical range of a numeric dataset from its minimum and maximum values
range-calculatorMath & Numbers
Solve quadratic equations, classify the roots, and return discriminant, vertex, and factor information
quadratic-equation-calculatorMath & Numbers
Simplify ratios, calculate ratio shares, and convert between ratio, fraction, and decimal forms
ratio-calculatorMath & Numbers
Solve quadratic equations ax² + bx + c = 0 and linear equations bx + c = 0 with detailed steps, discriminant analysis, vertex calculation, and axis of symmetry.
quadratic-equation-solverDate & Time
Generate recurring dates based on a pattern
recurring-event-generatorMath & Numbers
Generate Pascal's triangle with customizable number of rows
pascals-triangle