Graph functions.
Explore the results.
Plot a function, change a parameter, and see how the graph responds. A free graphing calculator for learning and checking your work.
Start with a function.
Choose an example to open in the calculator.
y = x² − 4
Table of values
| x | y |
|---|---|
| -2 | 0 |
| 0 | -4 |
| 2 | 0 |
Read the graph.
Check the numbers.
Keep the equation in view as you inspect its graph. Use the table to check values at specific points.
Add curves and explore changes with sliders.
Return to your graph in this browser, copy a share link, or export an image.
Using the graphing calculator
What can I graph?
Enter functions such as y = x², y = sin(x), y = 1/x, or y = √x. You can also add points such as (2, 3), vertical lines such as x = 4, and parameters such as a in y = ax². Implicit curves, inequalities, and 3D graphs are not supported in this release.
How do I inspect and share a graph?
Drag to pan, use the zoom buttons or mouse wheel to zoom, and choose Table to check values. Share copies a link containing the graph. Export saves a PNG. Shared graphs use the settings included in the link.
Is my graph saved online?
Your last graph is saved on this device when browser storage is available. No account is needed. Graph links contain the expressions you choose to share; anyone with a link can open them. Graphs and tables are numerical approximations.