Our Mission
graphingcalculate.com was built with one simple belief: powerful mathematical tools should be free and accessible to everyone. A student in a developing country deserves the same quality graphing calculator as one at a top university. A curious person exploring mathematics for fun deserves the same tools as a professional researcher.
Hardware graphing calculators like the TI-84 cost upwards of $100. Online alternatives often hide key features behind paywalls or require account creation. We built graphingcalculate.com to be completely free, require no login, and work instantly in any modern browser — on any device.
What We Built
graphingcalculate.com is a high-performance, browser-based graphing calculator that rivals the best tools available online. It was built from the ground up using modern web technologies:
- Canvas-based renderer — smooth, high-DPI graph rendering at 60 fps
- MathLive equation input — professional typeset math as you type, like a real graphing calculator
- math.js expression engine — parses and evaluates any mathematical expression
- Calculus tools — numerical integration (Simpson's Rule) and derivative computation
- Data tables & regression — scatter plots with linear regression and R² analysis
- URL state encoding — your entire graph is saved in the URL, shareable with one click
- Dark mode — a properly designed dark theme, not just an inverted palette
Who It's For
Students
From GCSE to university calculus — plot functions, check homework, explore concepts visually without needing a physical calculator.
Teachers
Create shareable graph URLs for classroom demonstrations. Show real-time changes with dynamic sliders. Export publication-ready graphs.
Researchers
Export SVG and LaTeX. Visualise data with scatter plots and regression. Compute definite integrals and tangent lines interactively.
Curious minds
Anyone who wants to explore the beauty of mathematics. No prerequisites, no cost, no barriers.
Our Values
Free, always
The core graphing calculator will always be free. We believe mathematics education should not be gated behind a paywall. We may introduce optional features in the future, but the essential tool will never require payment.
Privacy first
We don't track you. We don't sell your data. We don't require an email address. Your graphs live in your URL, not our database. Read our full Privacy Policy for details.
Open and transparent
We believe in transparency about how our tool works, what it can and can't do, and how we handle your data. If you have questions or concerns, we're always happy to hear from you.
Continually improving
We regularly add new features based on user feedback. Recent additions include calculus visualisations (tangent lines, definite integrals), data tables with linear regression, and a rich math input experience powered by MathLive. We have many more improvements planned.
Get in Touch
We love hearing from users — whether it's a bug report, a feature request, or just to say the tool helped with your studies. Visit our Contact page to reach us.