Graphing Calculator Online for Functions and Inequalities
CalcES Graphing Calculator is MathDa's free online graph plotter for your phone and computer, with no installation or account needed. Plot functions, compare curves and explore solution regions for school maths, B.Tech coursework or lab readings.
Plot functions, conic sections and inequality regions
CalcES Graphing Calculator plots several function graphs together, each in its own colour. Enter equations in x and y to draw circles, ellipses, parabolas and hyperbolas without rearranging them into y = f(x). Parametric and polar curves are also supported.
Inequalities appear as shaded regions. Add the constraints from a linear-programming exercise to explore the feasible region. Tap a curve to see roots and intersections, axis crossings, maxima and minima; with a mouse, press and drag along it to read coordinates.
Change parameters, explore calculus and fit data
CalcES Graphing Calculator creates sliders from constants entered on their own lines, such as a = 1. Adjust or animate a slider to see how a parameter changes a curve.
The calculus tools support derivatives, including the nth derivative, as well as antiderivatives, definite integrals, sums and products. Tables of points and computed columns help you plot lab readings as a scatter plot and fit a regression model, such as a line of best fit. Box plots, histograms and dot plots offer other ways to view data.
Send calculations to the graph, then export and share
The Graph button in the scientific calculator sends supported functions, tables and calculus results to the graph. Both tools use one shared angle unit, so check degrees or radians before comparing trigonometric results. The table of values Guide explains how to prepare function values.
Export a PNG image for an assignment or CSV values for further work. You can also share a graph by link or import a saved graph.
Frequently asked questions
Can I plot several functions on the same graph?
Yes. CalcES plots multiple curves together in different colours, helping you compare their shapes and intersections.
How do I draw the feasible region for a Class 12 linear programming problem?
Enter the constraints as inequalities in x and y in the CalcES graphing calculator. Their shaded regions show the feasible region where the constraints hold.
Can I change a function using sliders?
Yes. Define a constant on its own line in CalcES to create a slider. Move or animate it to change the parameter.
Can I plot lab readings and save the graph?
Yes. CalcES supports tables of points, scatter plots and regression fits. Export a PNG image or CSV values, or share the graph by link.
Can I graph a circle or ellipse without making y the subject?
Yes. CalcES accepts equations in x and y for circles, ellipses, parabolas and hyperbolas without rearranging them into y = f(x).
About this graphing calculator
MathDa makes the graphing calculator for exploring graphs alongside scientific calculations. Check important results against the equations and data you entered.