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 3.3.0

Fixed a bug that prevented saving screenshots to your device.

Ratings and Reviews

4.4 out of 5
50 Ratings

50 Ratings

Tangoking444 ,

Desmos saved my life

I was in an incredibly bad period in my life. Everything was going horribly, and I even stared death in the face, until my maths teacher Mr Vlastos introduced me to Desmos. Since then, everything has changed for the better. I wake up in the mornings and remember that Desmos is there for me. There’s never a moment where Desmos is not on my mind. It’s smooth, silky graph lines never fail to bring a smile to my face. I love Desmos, and Desmos loves me.

Sheepdog_crantock ,

Have faith... believe in desmos

Uncle des really helped me through a tough time: quadratics. I highly recommend bcs he’s an actual G. He’s a reliable source of happiness and I trust him with all my secrets. I utterly have too many words to describe how great Uncle Des is. He helped me through life when it was tough and I felt like I couldn’t go on. Desmos was the light of my life and overall really improved my drama grades. I LOVE YOU

JustSadIsTaken ,

Best, but

I wrote a review of this app ages ago, and my opinion has not changed in that it is excellent. You can download the instructions too.. but, i do have problems with the axes when I convert from radians to degrees, keep having to alter the parameters on the axes.. takes time. Perhaps an auto change?
Or am I missing something?


Desmos, Inc.
7.3 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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