Online Graphing Calculator
Plot any function instantly, with roots, extrema and a value table.
Enter your values
Enter the function f(x) you are working with.
Enter the x minimum you are working with.
Enter the x maximum you are working with.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Roots (x-intercepts)
- 0
- y-intercept
- 0
- Turning points
- (-8.1587, -3.4015), (-4.4077, -0.3684), (-1.8755, -1.5166), (1.8755, 1.5166), (4.4077, 0.3684), (8.1587, 3.4015)
| x | f(x) |
|---|---|
| -10 | -2.45598 |
| -8 | -3.38936 |
| -6 | -1.52058 |
| -4 | -0.4432 |
| -2 | -1.5093 |
| 0 | 0 |
| 2 | 1.5093 |
| 4 | 0.4432 |
| 6 | 1.52058 |
| 8 | 3.38936 |
| 10 | 2.45598 |
Quick answer
An online graphing calculator plots a function over a chosen x-window so you can see its shape, intercepts and turning points without installing software.
At a glance
| What it does | Plot any function instantly, with roots, extrema and a value table. |
|---|---|
| Category | Math |
| Inputs needed | Function f(x), x minimum, x maximum |
| Main output | Roots (x-intercepts) |
| Cost | Free — no sign-up, no download |
How to use the Graphing Calculator
- 1Type a function of x.
- 2Set the viewing window.
- 3Read the graph, roots, turning points and value table.
Inputs explained
- Function f(x)
- Enter the function f(x) you are working with.
- x minimum
- Enter the x minimum you are working with.
- x maximum
- Enter the x maximum you are working with.
Worked example
Using the values the calculator loads with:
Inputs
- Function f(x)sin(x) + 0.3x
- x minimum-10
- x maximum10
Results
- Roots (x-intercepts)0
- y-intercept0
- Turning points(-8.1587, -3.4015), (-4.4077, -0.3684), (-1.8755, -1.5166), (1.8755, 1.5166), (4.4077, 0.3684), (8.1587, 3.4015)
Frequently asked questions
Which functions are supported?
Polynomials, trig (sin, cos, tan and inverses), exponentials, ln, log, sqrt, cbrt, abs and combinations of them with + − × ÷ and ^.
Is it free?
Yes, completely free with no sign-up, and it runs in the browser on phone or desktop.
What do I need to enter into the Graphing Calculator?
Just 3 values: function f(x), x minimum, x maximum. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Graphing Calculator work out the answer?
An online graphing calculator plots a function over a chosen x-window so you can see its shape, intercepts and turning points without installing software. The working is shown step by step so you can verify the result by hand.
Is the Graphing Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.