Statistics & data Calculators
Turn repeated measurements into a mean, a spread and a fitted relationship. Keep the assumptions in view.
Error bars & acceptable lines
Plot x and y uncertainty bars, test a candidate line against every rectangle, and find maximum/minimum gradients and intercept bounds.
Open calculatorLinearization & log plots
Transform both axes with squares, roots, reciprocals or logarithms. Propagate uncertainties, fit a line and export processed data.
Open calculatorGraph gradient, area & prediction
Find segment gradients, linearly interpolate or extrapolate, and estimate signed area with trapezoids. See each interval and its working.
Open calculatorStandard deviation & error
Calculate mean, population and sample standard deviation, and standard error from a list of measurements, with formulas and full working.
Open calculatorLinear regression
Fit a straight line to two-column data. Calculate slope, intercept, R², Pearson r and coefficient standard errors with a graph and working.
Open calculator