Free Graphing Calculator Online
CalcES Graphing Calculator is a free browser tool made by MathDa for plotting and exploring graphs on phone and computer. No installation or account is needed. Enter several functions as y = f(x) to compare function graphs in different colors, whether you are checking pre-calculus homework or explaining a curve to a class.
Graph conic sections and inequality regions
CalcES plots implicit equations in x and y, including lines, circles, ellipses, parabolas and hyperbolas. Enter an inequality to shade its solution region. Parametric curves and polar curves give you other ways to describe a path.
Tap a curve to see roots and intersections, axis crossings, maxima and minima. With a mouse, press and drag to trace a curve and read coordinates; labels stay on screen so you can compare points.
Explore sliders, data and calculus
CalcES turns a constant on its own line, such as a = 1, into a slider. Move or animate it to see how a parameter changes the graph.
Use tables of points and computed columns for scatter plots and regression fits, including a line of best fit. A box plot, histogram or dot plot helps show how observations are spread. For supported functions, graph derivatives, including the nth derivative, and antiderivatives; evaluate definite integrals, sums and products.
Send a calculation to the graph and share it
The CalcES scientific calculator sends a function, table or calculus result to the graph through its Graph button. Both tools use a shared angle unit, so check degrees or radians before comparing trigonometric results.
Export a PNG image for a worksheet or CSV values for further work. Share a graph by link, or import a saved graph to revisit it.
Frequently asked questions
Can I graph a circle without rearranging the equation?
Yes. CalcES Graphing Calculator accepts implicit equations in x and y, including circles and other conic sections.
Can I shade the solution region of an inequality?
Yes. Inequalities in x and y appear as shaded regions in CalcES Graphing Calculator.
How do I change or animate a graph with a slider?
In CalcES Graphing Calculator, enter a constant on its own line to create a slider. Move the slider or use its animation to change the parameter and watch the graph respond.
Can I fit a regression curve to my data?
Yes. CalcES tables of points support scatter plots and regression fits, with computed columns for working from your data.
How do I send a calculator result to the graph?
Press the Graph button on a function, table or calculus result in CalcES's scientific calculator. Both tools share one angle unit, so check degrees or radians.
About CalcES Graphing Calculator
MathDa makes CalcES Graphing Calculator for learning and checking graph-based work. Confirm important coordinates and conclusions against the original problem.