Graph functions, explore algebra, visualize calculus, and prepare for standardized testing — all in one free, browser-based tool.
Get Started
Up and running in seconds — no download, no sign-up required.
Select either the Graphing Calculator or Scientific Calculator tab depending on your need.
Type any function, equation, or expression. Use standard math notation like y = x² + 3.
Pan and zoom with your mouse or touchscreen. Click points to see exact coordinates.
Use the Desmos menu to save your graph, export an image, or share a link.
Capabilities
A powerful suite of mathematical tools for students, educators, and test-takers.
Plot linear, quadratic, polynomial, trigonometric, exponential, and logarithmic functions with instant rendering.
Add sliders to any parameter and watch your graph animate in real time — perfect for understanding transformations.
Enter data sets and see them plotted alongside function graphs. Great for regressions and data analysis.
Compute and visualize derivatives, integrals, and limits. See the area under curves shaded automatically.
Fully responsive and touch-friendly. Use it on your phone, tablet, Chromebook, or desktop — no install needed.
Full scientific calculator mode for trig functions, logarithms, factorials, permutations, and complex arithmetic.
Interface matches the approved version used in NC, Georgia, Virginia, Texas, and SAT digital testing environments.
Save your work as an image, export as PNG, or generate a shareable link to your graph in one click.
Completely free to use. No login, no email, no subscription. Open the page and start graphing immediately.
Standardized Testing
Desmos is the official embedded calculator for major state assessments and the SAT. Practice here to be ready on test day.
The NC Desmos Graphing Calculator is the official tool embedded in North Carolina's End-of-Grade and End-of-Course assessments for grades 6–12 math.
The Georgia Desmos Graphing Calculator is the embedded graphing tool in Georgia Milestones Assessment System (GMAS) for eligible math courses.
Virginia Desmos Graphing Calculator is provided during SOL (Standards of Learning) assessments for Algebra I, Geometry, and Algebra II.
Desmos Texas Graphing Calculator is the approved graphing tool available on the STAAR (State of Texas Assessments of Academic Readiness) for Algebra I and II.
Desmos is the built-in graphing calculator for the Digital SAT (dSAT). Practice with this exact interface to feel confident on test day.
Many additional states and AP exams have integrated Desmos. Always check your state's DOE website for the most current calculator policy.
Questions & Answers
Everything you need to know about using Desmos for testing and everyday math.
The Desmos Graphing Calculator is a free, web-based graphing tool that lets you plot equations, graph functions, and explore math visually. It's used by millions of students and teachers worldwide and is also the official embedded calculator in many standardized tests including the SAT, NC EOG, Georgia Milestones, Virginia SOL, and Texas STAAR.
Yes! Desmos is the official built-in calculator for the Digital SAT (dSAT). You don't need to bring a physical calculator — the Desmos Graphing Calculator is embedded directly in the Bluebook testing app. Practicing with Desmos before your exam is highly recommended so you're comfortable with the interface on test day.
In North Carolina, the Desmos Graphing Calculator is embedded in the online NC Check-Ins and EOG/EOC assessments for grades 6 through 12. Students can access it directly within the testing platform — no separate device or download is needed. The tool here closely mirrors the version students see during testing so they can practice in a familiar environment.
Yes. Georgia has approved Desmos as an embedded calculator tool within the Georgia Milestones Assessment System for math courses that permit calculator use. The exact courses and grade levels that receive access may change by year, so check with your school's testing coordinator for the most current Georgia Desmos Graphing Calculator policy.
Yes. The Virginia Department of Education has approved the Desmos Graphing Calculator as an embedded tool in Standards of Learning (SOL) online assessments for eligible math subjects, including Algebra I, Geometry, and Algebra II. Practicing with this tool ahead of time will help you navigate it confidently on test day.
The Desmos Graphing Calculator plots equations on a coordinate plane, supports sliders and animation, and is ideal for algebra, pre-calculus, and calculus. The Desmos Scientific Calculator is a more traditional interface optimized for arithmetic, trigonometry, logarithms, and other computations without a visual graph. Some tests provide one or both depending on the subject and grade level.
Yes, completely free. The Desmos calculator requires no login, no account, and no subscription. It runs entirely in your browser on any device — phone, tablet, Chromebook, Mac, or PC.