Open Source Graphing Calculator

Free Online Graphing Calculator

This free, open-source graphing calculator brings the power of a modern scientific graphing calculator to your browser. With a clean, intuitive interface inspired by the best calculator designs, it offers seven powerful modes: Calculation, Grapher, Statistics, Probability, Equations, Sequences, and Python.

Features

• Full scientific calculator with trig, log, exponential, and complex number support
• Interactive function graphing with color-coded curves, zoom, pan, and trace
• Table of values for graphed functions
• Find zeros, min/max, and intersections of graphed functions
• Statistics: mean, median, standard deviation, quartiles, histograms, and box plots
• Probability: binomial and normal distribution calculators with visualizations
• Combinatorics: nCr, nPr, and factorial calculations
• Equation solver: quadratic, cubic, 2x2 and 3x3 linear systems
• Recursive sequence generator with graphing
• Python-style expression evaluator
• DEG/RAD angle mode toggle

How to Use

Click any app icon on the home screen to open that mode. Use the Home button or press Escape to return to the home screen. In Calculation mode, type expressions and press Enter or = to evaluate. In Grapher mode, enter functions like sin(x), x^2, or ln(x) and switch to the Graph tab to visualize them. Use the physical calculator buttons below or your keyboard for input.

Supported Functions

sin, cos, tan, asin, acos, atan, ln, log (base 10), sqrt, abs, floor, ceil, round, exponents (^), factorial (!), pi, e, and complex numbers (a+bi). The calculator supports both degree and radian angle modes.