Desmos Calculator
A free online graphing calculator that works like Desmos. Plot functions, graph equations, and explore maths visually — no download or sign-up. Use it for school, homework, or revision.
Use our full graphing calculator to plot functions and equations.
Open Graphing CalculatorWhat is a Desmos-style calculator?
A Desmos calculator is a free online graphing calculator that lets you plot functions, explore equations, and see maths on a graph. Like Desmos, it’s used in schools and at home for algebra, calculus, and trigonometry. You can graph lines, parabolas, trig functions, and more without installing anything.
Our graphing calculator is a free alternative you can use in the same way: enter an equation, set the axes, and view the graph. It works on phones, tablets, and computers.
How to use this graphing calculator
- Open the calculator: Click “Open Graphing Calculator” above to go to the graph tool.
- Enter a function: Type your equation (e.g. y = x² or y = sin(x)) in the input.
- Set the window: Adjust the x and y ranges so you can see the part of the graph you need.
- Plot and explore: View the graph and use it to find intercepts, roots, and behaviour.
Common uses
Algebra
Graph linear, quadratic and polynomial functions to solve equations and see how they behave.
Calculus
Visualise derivatives, integrals and limits to support calculus topics.
Trigonometry
Plot sin, cos and tan and see period, amplitude and phase.
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Cite This Calculator
Reference this calculator on your website or in your work using the citation below:
HTML Citation Code:
<p>Calculator: <a href="https://onlinecalculator.co.uk/math/desmos-calculator" target="_blank">Desmos Calculator</a> - OnlineCalculator.co.uk</p>APA Style Citation:
OnlineCalculator.co.uk. (2025). Desmos Calculator. Retrieved from https://onlinecalculator.co.uk/math/desmos-calculatorNote: This calculator is free to use and reference. No permission required for educational or commercial citation.