Open Source Calculators

MhcFS2 - engineering calculator. (v. 1.2 b141) (math expression calculator, scientific calculator, numerical, integral,integration, derivative, root, matrix, differencial, differentiation, equation, LSE,ODE )

Made like in one day, using PyQT5, QT Designer, and PyInstaller

Simple and fast in use scientific calculator. More details in README. It's not that long.

A handy tool designed to help beginner Astronomers. The software Astronomy CCD Calculator uses NASA/SkyView survey resource which provides CCD images of the night sky.It helps you plan an observation by letting you play with different instruments resulting various "Fields Of View" so you can see what your camera will capture and choose the best target for the session.

Avoid by-guess-and-by-golly use of turns-to-inductance calculators to determine number of turns to yield the inductance you need. Using the inversion of Wheeler's formula for inductance of single-layer coils, calculates the number of turns required to produce a specified inductance. Specify desired inductance, coil radius, and winding pitch.

Looking for a simple yet powerful financial tool? Our calculator app helps you easily manage your money with four key features. You can calculate how much your savings will grow with interest — just enter your deposit, rate, and period. It’s perfect for planning your investments. The app also helps you understand discounts — input the original price and discount percentage, and see the final price instantly. Managing regular payments is simple: just enter the amount, frequency, and duration to find out your total expenses. Additionally, the app provides a clear financial overview, combining all calculations to help you plan smarter. Its intuitive interface makes navigation easy, and all calculations use reliable formulas for precision. The app is fast, lightweight, and works offline, securing your privacy by not storing personal data. Whether budgeting, saving, or shopping smarter, this app is your go-to tool for better financial decisions.

Simple matrix calculator with TUI (shell-like) able to do basic matrix operations including fast computing of determinant.

A simple open source/free software tax calculator written in .NET. It works on Windows and also on Mac and Linux with Wine and Mono. One of the first to be open source and free! :)

This software has four major modes- Simple, Scientific, Base & Equation. It also has Unit Converter, Date Calculator & Prime Number Generator.

A nice and handy Calculator made by me using Visual Basic.

Simple pushdown calculator written in C++.