This page contains some programs for integrating and differentiating numerical data. A function $f(x)$ is described by the two columns of data in the textbox at the top-left. You can paste your own data into this textbox. When the "calculate" button is pressed, the data is plotted on the right. Below the data and plot of $f(x)$, the derivative $\frac{df}{dx}$ and the second derivative $\frac{d^2f}{dx^2}$ are tabulated and plotted. Below the derivatives, the integral of $f(x)$ is shown as well as the integral of the integral. The integration routines assume that the measurements are equally spaced with an interval $\Delta x$.