Graphing Calculator — Free Online Function Plotter | AllInOneTools
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📈 Function Plotter

Graphing Calculator

Plot multiple functions on an interactive coordinate plane. Zoom, pan, and trace values with your mouse. Supports polynomials, trig, exponential, and logarithmic functions.

y =
y =
x: 0, y: 0
x: [-10, 10]y: [-10, 10]Grid: 1

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d/dxDerivative∫IntegrallimLimitxnExponent📐Logarithm△Triangle

Graphing Functions: Visualizing Mathematics

A graphing calculator plots the relationship between variables as a visual curve on a coordinate plane. This transforms abstract equations into intuitive shapes, making it easier to understand behavior like growth, oscillation, symmetry, and intercepts. Graphing is essential for algebra (finding roots), calculus (visualizing derivatives and integrals), physics (motion curves), and data analysis (curve fitting).

Supported Function Types

Polynomials: x^2, 3x^3-2x+1, x^5
Trigonometric: sin(x), cos(x), tan(x)
Exponential: e^x, 2^x, 10^x
Logarithmic: ln(x), log(x)
Roots: sqrt(x), x^(1/3)
Rational: 1/x, (x^2-1)/(x+2)
Absolute: abs(x), abs(sin(x))
Composite: sin(x^2), e^(-x^2), ln(abs(x))

Operators: + - * / ^ ( )
Constants: pi, e

Frequently Asked Questions

What functions can I graph? ▾
Polynomials, trig (sin, cos, tan), exponential (e^x), logarithmic (ln, log), square root, absolute value, and compositions of these. Use standard math notation with ^ for powers.
How do I zoom and pan? ▾
Use the + and - buttons or scroll wheel to zoom. Click and drag on the graph to pan. Use Reset View to return to the default window.
Can I plot multiple functions? ▾
Yes! Click Add Function to add up to 6 functions. Each gets a unique color. Compare shapes, find intersections visually, and explore how parameters change curves.
How do I find where a function crosses zero? ▾
Move your mouse over the graph and watch the coordinate display. Where the curve crosses the x-axis, y will be near zero. Zoom in for greater precision.