Explore math with Desmos! Plot functions, create tables, add sliders, animate your graphs, and more -- all for free.

At Desmos, we imagine a world of universal math literacy and envision a world where math is accessible and enjoyable for all students. We believe the key is learning by doing.

To achieve this vision, we’ve started by building the next generation of the graphing calculator. Using our powerful and blazingly-fast math engine, the calculator can instantly plot any equation, from lines and parabolas up through derivatives and Fourier series. Sliders make it a breeze to demonstrate function transformations. It's intuitive, beautiful math. And best of all: it's completely free.


Graphing: Plot polar, cartesian, or parametric graphs. There’s no limit to how many expressions you can graph at one time - and you don’t even need to enter expressions in y= form!

Sliders: Adjust values interactively to build intuition, or animate any parameter to visualize its effect on the graph. Try typing y=mx+b and adding sliders to get started.

Tables: Input and plot data, or create an input-output table for any function.

Statistics: Find best-fit lines, parabolas, and more.

Calculus: Graph derivatives (d/dx) and explore key concepts by building secant and tangent line sliders. Graph Maclaurin Series (okay, all kinds of Taylor Series, but that guy gets no love...) Evaluate a definite integral (int) in an instant, or plot an integral with varying bounds.

Zooming: Scale the axes independently or at the same time with the pinch of two fingers, or edit the window size manually to get the perfect window.

Points of Interest: Touch a curve to show maximums, minimums, and points of intersection. Tap the gray points of interest to see their coordinates. Hold and drag along a curve to see the coordinates change under your finger.

Scientific Calculator: Just type in any equation you want to solve and Desmos will show you the answer. It can handle square roots, logs, absolute value, and more.

Inequalities: Plot cartesian and polar inequalities.

Offline: No internet access required.

Visit to learn more and to see the free online version of our calculator.

What's New

Version 3.1.7

Once again, with iOS 9 support!

Ratings and Reviews

Great app but could be even better if...


As a student I use this app every day. Its functionality is great however I have found that if the graph is zoomed in far enough, it crashes the app.

Also, as the round brackets option creates a set of brackets, why list them individually? If they were grouped there would be more space to put other important functions. The braces could be put in the location of the second bracket.

Also it is currently difficult to create an nth root, a button could be added for that. Finally, there seems to be no golden ratio, or am I missing something? The τ option seems to be 2π.

Overall, great app, and would be even better if you could save it to your Desmos account.

Don' t use Desmos, DISCOVER Desmos!


I love that Desmos is not just a graphing calculator!

Desmos teaches students and teachers how to discover the power of mathematical relationships through play, experimentation, and ultimately through making connections through an iterative, failure and improvement process.

Desmos empowers curiosity, asking questions, persistence, precision, resilience differentiation, and a growth mindset- everything a mathematics educator strives for.

Desmos makes learning and teaching FUN, through a platform that is mathematically and technically relevant and appropriate for a school setting and accessible to many ages.



This app works amazingly. Though one small issue the interface can be a bit better cause when editing for example a definite integral it's very hard to edit a and b on the integration sign. Please make fix that thanks!!!!


Desmos, Inc.
8.7 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad and iPod touch.
Age Rating
Rated 4+
© 2018 Desmos Inc.


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