Alternatives to Rule of 3 Calculator for all platforms with any license

SpeedCrunch

SpeedCrunch is a free, fast, high precision open source algebraic calculator with an intuitive interface and a extensive list of features, including: Unlimited...

Free Open Source Mac Windows Linux PortableApps.com
Input history Calculators Functions Inline editing ... Live Preview Multiple languages Portable Syntax Highlighting Support for Themes Variables Add a feature

231 Like
Wolfram Alpha

Wolfram Alpha is a "Computational Knowledge Engine" - different from a search engine, it answers factual queries directly by computing the answer from...

Freemium Web Android iPhone Windows Phone iPad ... Kindle Fire
Built-in search engine Equation solving Math-solver Search engine Add a feature

437 Like
Qalculate!

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...

Free Open Source Windows Linux Xfce
Currency Conversion Periodic table Unit converter Algebra ... Calculators Equation solving Exchange rates Fractions Persistent History Variables Add a feature

45 Like
Soulver

Soulver is a smart notepad with a built-in calculator. It gives instant answers to any calculations it finds in your text. It's a better way to work stuff out than...

Commercial $ $ $ Mac iPhone iPad
Calculators Currency Conversion Editable calculations Natural Language Processing ... Works Offline Side-by-Side View Add a feature

22 Like
fxSolver

Online math solver, equation editor and database, graphing calculator and science/engineering problem helper.

Free Web
Formula Builder Equation editor Equation solving Built-in editor ... Calculators Database Editable calculations Education Engineering calculator Graphs Library Math-solver Shared links Add a feature

43 Like
Calculator

Calculator provides simple and advanced mathematical functions in a beautifully designed app.

Free Web Android Chrome OS Android Tablet Android Wear
Calculators Add a feature

37 Like
Numi

Numi is a handy calculator app for Mac. It allows to describe tasks the natural way and instantly get an accurate answer. For example, $20 in euro - 5% discount or today...

Free Mac
Side-by-Side View Calculators Currency Conversion Data export/import ... Extensible by Plugins/Extensions Support for Keyboard Shortcuts Sits in the MenuBar Natural Language Processing Real-time translation Add a feature

15 Like
Windows Calculator

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...

Free Open Source Windows
Calculators Bundled with Windows Add a feature

17 Like
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GNOME Calculator

Calculator for the GNOME Desktop Environment, formerly known as gcalc (and gcalctool CLI).

Free Open Source Linux GNOME
Calculators Add a feature

9 Like
Insect

High precision scientific calculator with full support for physical units (web and terminal versions).

Free Open Source Mac Windows Linux Web Self-Hosted
Console-based Web-Based Add a feature

7 Like