Desmos

Desmos is a free online graphing calculator that plots functions, data, and inequalities with beautiful, interactive graphs. Students can slide variables to see how a graph changes, plot points and tables, and explore transformations in real time. It is fast, clean, and easy enough for a first-year algebra student to use.

Key Features

• Interactive graphing calculator in the browser
• Sliders to explore how graphs change
• Tables, points, and inequalities
• Classroom activities for maths teachers
• Live view of student work
• Completely free with no ads

Pricing

Prices as listed in 2026 research. Always check the official site for the latest price — plans change. Free plan: Yes — it has a free plan.

How it works

Beyond the calculator, Desmos offers a classroom platform with interactive activities and lessons for maths teachers, covering topics from linear functions to calculus. Teachers can create or use ready-made activities, watch student work live, and pause the class to discuss a common mistake.

Desmos is completely free, with no paid plan and no ads. It is best for maths students and teachers who want a graphing calculator that is better than a handheld device, and for anyone who wants to see maths visually.

Pros and Cons

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