The Best 71 Windows Calculator Alternatives

  • Wolfram Alpha icon

    Wolfram Alpha

    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...

    Freemium Android iPhone iPad Web Kindle Fire Windows Phone

  • Calculator++

    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.

    Free Open Source Android Android Tablet

  • Giac/Xcas

    Giac/Xcas is a free computer algebra system for Windows, Mac OS X and Linux/Unix (license GPL3, for commercial dual-license contact us).

    Free Open Source Mac OS X Windows Linux

  • Precise Calculator

    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.

    Free Open Source Windows

  • Arithmate Pro Calculator

    A modern, scientific calculator that is easy to use. While other calculators display only one number at a time, this one shows you the whole expression you are inputting, leading to a much more user friendly experience.

    Commercial Android

  • Omni Calculator

    Omni Calculator is a web/mobile calculator that solves concrete problems such as mortgage payment, gross margin, body mass index, break-even point, etc.

    Free Android iPhone iPad Web

  • ESBCalc

    ESBCalc is a Freeware Scientific Calculator for Windows with Infix Notation, Brackets, Scientific Functions (Trigonometric, Hyperbolic, Logarithmic - including Base 10, Base 2 & Natural - plus more), Memory, Paper Trail, Result History...

    Freemium Windows

  • MyScript Calculator

    With MyScript Calculator, perform mathematical operations naturally using your handwriting.

    Free Android iPhone Android Tablet iPad

  • Insect

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

    Free Open Source Mac OS X Windows Linux Web Self-Hosted

  • Moffsoft FreeCalc

    Moffsoft FreeCalc is the ideal replacement for your standard Windows calculator - with adjustable size, visible memory value and digit groupings, this free calculator...

    Freemium Windows

  • XCALC

    XCALC is my little RPN calculator completely free to use, and still downloadable. XCALC is now a DEAD project. No work has been done on this project since 2012, and nothing more will be done either.

    Free Open Source Windows Linux

  • Calculator Plus

    Calculator Plus is a nice addition to hundreds of Calculator apps but with unique idea and innovative and user friendly designed buttons. A sound and smart person...

    Free Android

  • eCalc Scientific Calculator

    An easy to use scientific calculator with many advanced features to help you solve algebra, trigonometry, and engineering math problems. The calculator comes with six...

    Commercial Mac OS X Windows

  • Calculate

    A math expression calculator with persistent memory for variables and functions. Any JavaScript expression can be evaluated. - Click the C button to clear the output...

    Free Mac OS X

  • ECW Expression Calculator

    ECW Expression Calculator is an advanced expression calculator with the following features: * display result as decimal/hex/bin/oct/exponential * standard and...

    Free Windows

  • CCCalc

    CCCalc is a calculator with tape, you can correct any printed character with, and the tape recalculates everything itself. Unlimited precision, visible and even...

    Free Windows

  • Ruvenss Calculator

    Simple yet very effective calculator with print capabilities and log registration.

    Free Mac OS X Windows Linux Chrome OS

  • errProof

    The website has a lot of useful and unique tools.

    Free Web