Math & Numbers
Find the linear trend line of best fit for paired data and predict y values from x
line-of-best-fit-calculatorMath & Numbers
Fit a binary logistic regression model with gradient descent and predict class probabilities
logistic-regression-calculatorMath & Numbers
Compare three or more independent groups with the nonparametric Kruskal-Wallis H test
kruskal-wallis-calculatorMath & Numbers
Compare two independent samples with the nonparametric Mann-Whitney U rank-sum test
mann-whitney-u-test-calculatorMath & Numbers
Calculate the margin of error for a mean or proportion from sample size, confidence level, and variability
margin-of-error-calculatorMath & Numbers
Calculate Kendall tau-a and tau-b rank correlation for paired numeric data
kendall-tau-calculatorMath & Numbers
Calculate raw and excess kurtosis to measure tail weight and peakedness of a distribution
kurtosis-calculatorMath & Numbers
Solve linear equations of the form ax + b = 0 using coefficients or a typed equation
linear-equation-solverMath & Numbers
Calculate logarithms with any valid base, with optional log10, log2, and natural-log comparisons
logarithm-calculatorMath & Numbers
Solve common percentage questions including percentage of a total, value from a percentage, and percentage change
math-percentage-calculatorMath & Numbers
Convert kilometers per hour to miles per hour with configurable decimal precision
kmh-to-mphMath & Numbers
Convert kilometers to miles with configurable decimal precision
km-to-miles