# ECW Expression Calculator Alternatives

ECW Expression Calculator is described as 'advanced expression calculator with the following features: * display result as decimal/hex/bin/oct/exponential * standard and on-the-fly calculation modes * over 60 built-in functions: general, trigonometric, hyperbolic, statistical * user' and is a Calculator in the Education & Reference category. There are more than 50 alternatives to ECW Expression Calculator for a variety of platforms, including Windows, Android, Mac, Online / Web-based and iPad. The best alternative is SpeedCrunch, which is both free and Open Source. Other great apps like ECW Expression Calculator are Qalculate! (Free, Open Source), Windows Calculator (Free, Open Source), Numi (Freemium) and Soulver (Paid).

- Omni Calculator is a web/mobile calculator that solves concrete problems such as mortgage payment, gross margin, body mass index, break-even point, etc. It's very user-friendly, flexible and usable on web, mobile and as an embeddable web widget.
- Browser-based notepad built for math calculations.
- PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody looking for a feature rich calculator.
- Paid • Proprietary
- Mac
- iPhone
- iPad
- Apple Watch
- Apple TV

- Kalk is a convergent calculator application built with the Kirigami framework. Although it is mainly targeted for mobile Linux platforms, it can also be used on the desktop.
- A multipurpose calculator app with slick and intuitive user interface. Access additional features from the main screen of the app using gestures. It has a big variety of built-in functions and supports adding new user-defined functions.
- A kickass, open-source calculator that lets you do calculations and unit conversions naturally, with features like: - weight conversion - length conversion - temperature conversion - currency conversion Super simple to use. Caligator works the way you think.
- SpeQ is a small, extensive mathematics program with a simple, intuitive interface. All calculations are entered in a sheet. In there you can freely add, edit and execute calculations. SpeQ supports all common functions, constants, and units.
- Programmable scientific calculator which has more than 150 mathematical functions and all of them return as many digits as you need. It can calculate with real numbers, complex numbers, fractions, vectors, matrices. Commands if, goto and print can be used to create scripts.
- Rule of 3 Calculator is a portable tool that allows you to apply the mathematical Rule of Three in an easier, faster and more practical way! In order to represent decimal numbers, you must use "." instead "," (Example: 1.5 _ 2.33 _ 5.34687)
- A practical browser calculator that outputs results in real time!.