Can this 2D graphing calculator plot more than one equation?

Yes. Use Add Function to plot multiple equations on the same axes so curves can be compared directly.

Which functions and constants are supported?

The calculator supports common functions such as sin, cos, tan, log, log10, sqrt, abs, exp, pow, min, max, floor, ceil, asin, acos, and atan, plus pi and e constants.

Can I download the graph?

Yes. Use Download PNG to export the current graph for reports, notes, presentations, or engineering documentation.

Online function plotter

2D Graphing Calculator

Q: How do I plot a function online?

Enter an expression using x as the variable, choose the x-axis range, then select Plot Graph. The calculator evaluates y = f(x) and draws the function on an interactive graph.

Plot equations online, compare multiple y = f(x) functions, adjust the x-axis range, inspect values with hover labels, and export a clean graph image for reports or study notes.

Use graphing calculator Examples FAQ

Interactive 2D graphing tool

Plot one or more functions of x

Enter equations such as sin(x), x^2, exp(-0.2*x)*sin(3*x), or sqrt(abs(x)). Use pi, e, and common math functions without adding Math..

y = f(x)

Graph output

About this tool

Free Online 2D Graphing Calculator for Functions

Use this 2D graphing calculator to plot mathematical functions online for engineering, physics, calculus, algebra, and technical reporting. The tool graphs explicit equations in the form y = f(x), supports multiple function traces on the same axes, and lets you control the plotted x range and sample resolution.

The calculator is useful for checking curve shape, comparing equations, visualizing trigonometric functions, exploring polynomial behaviour, reviewing exponential decay, and preparing quick plots for coursework or early-stage engineering calculations. For final design work, verify plotted results against the original equations, assumptions, and required numerical methods.

Supported syntax

Equation Format

Function form

y = f(x)

Enter only the right side of the equation, for example sin(x) or x^2 + 2*x - 1.

Range control

x min <= x <= x max

The graph samples the function across the selected range and leaves gaps where the result is undefined.

sin(x)
cos(x)
tan(x)
sqrt(x)
abs(x)
log(x)
log10(x)
exp(x)
pow(x, 2)
pi
e

Guide

How to Use the 2D Graphing Calculator

Type a function using x as the variable, such as x^2, sin(x), or exp(-x).
Add more function rows if you want to compare equations on the same graph.
Set the x-axis range and sample count. Higher sample counts make smoother curves but can be slower.
Select Plot Graph, then zoom, pan, hover over points, or download the graph as a PNG.

Examples

Useful Function Plots

These examples cover common graphing calculator use cases for mathematics and engineering checks.

Trigonometric comparison

sin(x), cos(x), and sin(2*x) show phase and frequency changes.

Polynomial curve

x^3 - 4*x helps visualize turning points and roots.

Damped response

exp(-0.2*x)*sin(3*x) is useful for visualizing decay and oscillation.

Assumptions and limits

Before Using the Graph

This tool plots explicit 2D functions only, using the form y = f(x).
Undefined values, asymptotes, and discontinuities are shown as gaps where possible.
Large ranges, steep gradients, and very small features may require a higher sample count.
Use the graph for visualization and checking; confirm critical engineering or mathematical results separately.

FAQ