# ThinkCalculator Alternatives

ThinkCalculator is described as 'Online Calculator Resources' and is a Calculator in the Education & Reference category. There are more than 25 alternatives to ThinkCalculator, not only websites but also apps for a variety of platforms, including Android, Windows, Linux and Android Tablet. The best alternative is SpeedCrunch, which is both free and Open Source. Other great sites and apps similar to ThinkCalculator are Wolfram Alpha (Freemium), Qalculate! (Free, Open Source), Mathematica (Paid) and Windows Calculator (Free, Open Source).

- SpeedCrunch is a free, fast, high precision open source algebraic calculator with an intuitive interface and a extensive list of features, including: Unlimited Variables, Syntax Highlighting, Functions, with 'Automagic' Completion, 50 Decimal...
- Free • Open Source
- Mac
- Windows
- Linux
- PortableApps.com

- Wolfram Alpha is a "Computational Knowledge Engine" - different from a search engine, it answers factual queries directly by computing the answer from structured data, rather than providing a list of documents or web pages that might contain the answer.
- Freemium • Proprietary
- Online
- Android
- iPhone
- Windows Phone
- iPad
- Kindle Fire

- Qalculate! is a multi-purpose cross-platform desktop calculator. It is simple to use but provides power and versatility normally reserved for complicated math packages, as well as useful tools for everyday needs (such as currency conversion and percent calculation).
- Mathematica is a computational software program used widely in scientific, engineering, and mathematical fields and other areas of technical computing.
- Paid • Proprietary
- Mac
- Windows
- Linux
- Online

- A simple yet powerful calculator that includes standard, scientific, and programmer modes, as well as a unit converter. It's the perfect tool to add up a bill, convert measurements in a recipe or other project, or complete complex math, algebra, or geometry problems.
- Online math solver, equation library, graphing calculator and science/engineering problem helper.
- Calculator provides simple and advanced mathematical functions in a beautifully designed app.
- Calculator is an application that solves mathematical equations and is suitable as a default application in a GNOME Desktop environment.
- Free Step-By-Step Solutions to algebra problems.
- Freemium • Proprietary
- Online
- Android
- iPhone

- A calculator with the basic functions and a customizable widget. You can copy the result or formula to clipboard by long pressing it.
- Free • Open Source
- Android
- Android Tablet
- F-Droid