The Best 88 Mi 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

  • Grapher

    With Grapher, you can graph equations and data sets and visualize the results on your Mac in real time. Grapher displays algebraic relations, both implicit and explicit...

    Free Mac OS X

  • NaSC

    Its an app where you do maths like a normal person. It lets you type whatever you want and smartly figures out what is math and spits out an answer on the right pane.

    Free Open Source Linux

  • Excalibur

    Excalibur for Windows 32-bit version is a freeware full featured RPN-only calculator. This is a serious calculator for serious users. Excalibur takes up a small amount of resources for all it does so well.

    Free Windows

  • 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

  • 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

  • GNU Units

    The Units program converts quantities expressed in various scales to their equivalents in other scales. The units program can handle multiplicative scale changes as well as nonlinear conversions such as Fahrenheit to Celsius or wire gauge.

    Free Open Source Linux

  • 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

  • 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

  • Ruvenss Calculator

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

    Free Mac OS X Windows Linux Chrome OS

  • Unit Wolf

    Unit Wolf is a unit conversion program created for quick and reliable conversions. Enter entire equations or just simple numbers. Convert between 170 currencies or...

    Free Web

  • errProof

    The website has a lot of useful and unique tools.

    Free Web

  • Jim

    Jim is a medical image display package that allows easy viewing and analysis of Magnetic Resonance, x-ray CT and other types of medical image. Jim is an up-to-the-minute design with a familiar user-interface.

    Commercial Mac OS X Windows Linux Java Mobile