CalculatorsReviewed

Best Calculator Resources from Across the Web

Explore the top calculator resources for students, educators, and professionals—from trusted manufacturers and free online tools to AI-powered problem solvers. This guide organizes the best options by category with direct links for easy access.

🎓 Leading Calculator Manufacturers

Texas Instruments

The #1 graphing calculator brand recommended by U.S. teachers. TI offers a full range of calculators—from basic models to advanced graphing options like the TI-84 Plus CE. Their devices are approved for major college entrance exams, and the website provides rich educational resources including math activities and teacher training.

Casio Education

Casio has been a global leader in educational calculators for over 60 years. Their lineup includes the fx-CG100 and fx-8200 AU, supporting classrooms in more than 100 countries. Casio’s GAKUHAN program offers teacher training and curriculum materials. For UK-specific resources, visit Casio Education UK.

HP Calculators

HP revolutionized scientific calculators and remains a standard in professional and financial fields. From scientific and graphing models to the iconic HP 12C for finance, HP provides extensive technical support and resources through their official licensee site.

🌐 Premium Online Calculator Platforms

Desmos

Desmos offers free scientific and graphing calculators trusted in schools worldwide. Their tools are user-friendly, available online and via mobile apps, and approved for standardized tests like Virginia’s Standards of Learning assessments.

GeoGebra Calculator Suite

GeoGebra combines graphing, scientific, geometry, and probability calculators into one powerful platform. Used globally by educators, it features dynamic linking across different math views—perfect for visual learners.

🤖 AI-Powered Math Problem Solvers

Symbolab

An advanced AI math solver used by over 300 million people. Symbolab provides step-by-step solutions and 500+ specialized calculators for everything from algebra to calculus. A Chrome extension lets you scan problems directly from any website.

Mathway

Called the world’s smartest math calculator, Mathway handles algebra, calculus, and beyond. Simply snap a picture of a problem to get instant, step-by-step solutions.

Photomath

Photomath specializes in camera-based problem solving. Just scan a math question to see clear, expert-developed explanations—covering everything from basic arithmetic to advanced calculus.

Microsoft Math Solver

A free, ad-free AI math solver supporting 22 languages. Enter problems via camera, handwriting, or keyboard. Integrated with Microsoft Edge, it provides interactive graphs and detailed steps.

WolframAlpha

The world’s computational knowledge engine. Solve complex problems across math, physics, engineering, and more. Use natural language input to generate detailed step-by-step reports.

🏫 Educational Institution Resources

Unity Environmental University

Unity’s curated list of free online calculators emphasizes that expensive handheld devices aren’t essential for math success. Recommended tools include Desmos, GeoGebra, and Calculator.net.

Khan Academy

While Khan Academy doesn’t have a dedicated calculator, their free math curriculum uses tools like Desmos to teach everything from kindergarten math to college-level algebra.

🧮 Specialized Calculator Websites

Calculator.net

A comprehensive online scientific calculator with double-digit precision. Supports both clicks and keyboard input and includes embeddable calculators for websites.

RapidTables

Offers a vast collection of calculators and conversion tools spanning math, science, finance, and engineering—serving millions of users monthly.

GIGACalculator

One of the largest free calculator collections online, with tools organized by category and accompanied by clear explanations and formulas.

The Calculator Site

Features calculators for finance, construction, health, and more. Known for their accurate financial tools and intuitive unit converters.

Math is Fun

A user-friendly scientific calculator with examples and references to help you understand every function you use.

⚙️ Professional & Engineering Calculators

MITCalc

A suite of engineering and technical calculators for mechanical design and validation—ideal for engineers handling gears, bearings, and other components.

MIT Living Wage Calculator

Estimate the true cost of living in any U.S. location. Updated annually, it uses detailed local expenditure data to calculate realistic budgets.

📱 Mobile & Browser Calculator Tools

Web 2.0 Calculator

A modern scientific calculator with advanced features, keyboard input, and number system conversions—perfect for students and professionals.

Chrome Extensions

Whether you need basic arithmetic, advanced graphing, or AI-powered solutions, these resources help you tackle math confidently and affordably.