PRACTICAL TOOLS. CLEAR ANSWERS.

Make numbers
work for you.

Explore free online calculators for math, graphing, science and everyday calculations. Use practical tools, follow clear examples, and understand the results.

Try “TI-84”, “graphing”, “percentage” or “scientific”.

OLCALC · MATH MODE
EXAMPLE FUNCTION
f(x) = x² − 4
✓ Roots: x = −2, 2
Made for clarityTools + helpful examples
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Start with a tool below or search by name, subject or task. The library is designed to grow as new tools are developed.

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TI-84 Style Graphing Calculator

Explore graphing and supported math functions with a browser-based calculator. Check the tool page for its current capabilities.

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Start with graphing

Explore functions with the TI-84 style calculator

Open the featured calculator to see supported graphing and math features, read practical examples, and learn how to interpret your results.

Explore the TI-84 calculator
Graphing basicsLearn how equations translate into curves.
Clear examplesFollow worked examples for common tasks.
Understand settingsReview angle modes and graph windows.
Know the limitsCheck which functions the tool supports.
About OLCalc

Useful tools, explained clearly

OLCalc is being built as an independent collection of online calculators and practical learning resources. Our goal is to make common calculations easier to complete and easier to understand.

Each published tool should explain what it does, how to use it, and any important limitations. We aim to keep navigation straightforward and make the experience usable on desktop and mobile devices.

Practical functionalityClear instructionsMobile-friendly design
Quick answers

Frequently asked questions

A few things to know when exploring OLCalc.

Are OLCalc tools free to use?

OLCalc is intended to provide free access to its published tools. Each tool page should clearly state any feature limits or requirements that apply.

Do I need to install an app?

Browser-based tools are designed to work on a supported web browser without a separate installation. Device and browser compatibility should be checked on each tool page.

Is OLCalc affiliated with Texas Instruments?

No. OLCalc is an independent website and is not affiliated with or endorsed by Texas Instruments. Product names are used only to describe relevant calculator styles or compatibility where applicable.

Can I rely on every result for important decisions?

Always review the method, assumptions and limitations of a calculation. For consequential academic, financial, health or professional decisions, verify results with an appropriate authoritative source.