Open Source Python Calculators
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Python Calculators
View related business solutionsBrowse free open source Python Calculators and projects below. Use the toggles on the left to filter open source Python Calculators by OS, license, language, programming language, and project status.
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Advanced Trigonometry Calculator
Open-source C/C++ math engine for advanced scientific computing
Advanced Trigonometry Calculator (ATC) is an open-source mathematical computing engine written mainly in C/C++. Created in 2011 and maintained by Renato Alexandre dos Santos Freitas, ATC is designed as a practical Windows desktop application for advanced calculations, automation, and technical problem solving. ATC supports equation solving, polynomial tools, complex numbers, matrix calculations, statistics, physics, geometry, unit conversions, DSP/FFT operations, and scripting. It can also process batch TXT files, making it useful for repeatable calculations and automated workflows. The project also includes ATC Online Alpha, a WebAssembly-based version that brings parts of the ATC engine to the web. ATC is released under the GPLv3 license and is made in Portugal. -
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Financial Calculator
Windows 11 only — includes 16 sections with text and visual reports.
Take control of your finances with Financial Calculator 8.0, a professional yet easy-to-use desktop tool built for precise, everyday financial calculations. From planning loans and estimating taxes to generating invoices and creating QR codes, this all-in-one software offers 16 specialized sections that make your daily financial and business tasks faster, clearer, and more accurate. Whether you’re a student, small business owner, or finance professional, Financial Calculator brings professional-grade precision to your desktop—no installation required. Perform calculations for Bank, Barcode, Building, Buy & Sell, Commodity, Dividing Money, Inflation, Interest, Internet Usage, Invoice, Loan, Password, Phone, QR Code, Stock Market, and Tax. -
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A tool for Spellcrafters and their customers playing Mythic Entertainment's MMPORG, Dark Age of Camelot
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Time Calculator
Calculator GUI+CLI, but for time intervals
Does simple math of two time values in the format MM:DD:YY. This allows adding/subtracting one duration with another without having to do any extra math to convert to/from decimal. -
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Calendar Calc v2.0
Date utilities for any calendar task
CalendarCalc represents a significant leap forward in digital time management and chronological calculation tools, offering a refined and powerful user experience directly on your Windows desktop. Designed to bridge the gaps left by traditional calendar applications, this utility focuses specifically on the mathematics of time, allowing you to instantly solve any query related to durations, intervals, and international holiday occurrences. With an advanced calculation engine and a fluid cross-platform interface, the app enables you to determine with surgical precision the exact number of years, months, weeks, and days between any two dates, eliminating the risk of human error in manual calculations. Beyond calculating time differences, the app features a versatile date projection function that allows you to add or subtract specific time periods to immediately identify future deadlines or past events, an indispensable tool for project management, legal term calculations, or retireme -
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NZMATH
Python Calculator on Number Theory, three-birds-one learning material
NZMATH is a Python calculator on number theory. It is freely available and distributed under the BSD license. All programs are written only by Python so that you can easily see their algorithmic number theory. You can get NZMATH with a single command: % python -m pip install -U nzmath Here % is the command line prompt of Windows or Unix/macOS. This release contains several program corrections and additions obtained by writing a programming "notebook" of the book 'Lectures on Elementary Number Theory' (TAKAGI, Teiji) in Python-NZMATH language. The "notebook" is available together. It is designed for beginning students of algorithmic number theory to self-study Number Theory, Programming and scientific English together, three-birds-one learning material. It is possible only by running and reading the programs. You can get the notebook here: https://sourceforge.net/projects/nzmath/files/nzmath-enttakagi/ Visit our home page in detail: https://nzmath.sourceforge.io/ -
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Python Calculator
My own project
Made like in one day, using PyQT5, QT Designer, and PyInstaller -
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pdd
Tiny date, time diff calculator
There are times you want to check how old you are (in years, months, days) or how long you need to wait for the next flash sale... pdd (python3 date diff) is a small cmdline utility to calculate date and time difference. If no program arguments are specified it shows the current date, time and timezone. -
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Cashderivatives.org Pricing Calculator (CDPC) is a calculator for financial instruments. The project is now discontinued. The project had reached alpha development status, when it was decided to not continue with the project.
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Arrear_Pension_Calculator
Simple app for calculating arrear pension amount of a given period.
A simple Arrear Pension Calculator app written in python with GUI specifically Govt. employees (Central & State). This application calculates arrear (Due - Drawn) / overdrawn / recovery of pension between any given periods. This app is not associated with the Govt. This app is for informational purpose only. This project is open source under GNU public license v3.0 -
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Black Spot Leaf Area Calculator
Automated leaf area estimation from scanned leaf images
Black Spot is a free stand alone software and method to estimate leaf area from images of leaves captured using standard flatbed scanners. This easy to use software allows the user to batch process a large number of samples from multiple species with minimal user input. -
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Financial Calculator (Linux)
Professional financial tools: 16 sections with text and visual reports
Take control of your finances with Financial Calculator 8.0, a professional yet easy-to-use desktop tool built for precise, everyday financial calculations. From planning loans and estimating taxes to generating invoices and creating QR codes, this all-in-one software offers 16 specialized sections that make your daily financial and business tasks faster, clearer, and more accurate. Whether you’re a student, small business owner, or finance professional, Financial Calculator brings professional-grade precision to your desktop—no installation required. Perform calculations for Bank, Barcode, Building, Buy & Sell, Commodity, Dividing Money, Inflation, Interest, Internet Usage, Invoice, Loan, Password, Phone, QR Code, Stock Market, and Tax. -
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FreqLength
Wavelength Calculator
FreqLength is a simple wavelength calculator that takes a given frequency as input and spits out various wavelength values for that frequency (full wave, half wave, etc.) If you'd like to donate there's several ways to do so: PayPal: https://paypal.me/gerowen Bitcoin (BTC): bc1q86c5j7wvf6cw78tf8x3szxy5gnxg4gj8mw4sy2 Monero (XMR): 42ho3m9tJsobZwQDsFTk92ENdWAYk2zL8Qp42m7pKmfWE7jzei7Fwrs87MMXUTCVifjZZiStt3E7c5tmYa9qNxAf3MbY7rD LiberaPay: https://liberapay.com/gerowen -
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My Calculate! is a python based calculator which can calculate: - Trigonometrical functions (in radians or degrees) - 2D and 3D geometrical calculations (area/perimeter/volume/surface area)
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PraktiCalc
a practical calculator written in Python
PraktiCalc is an unique calculator with many features you see elsewhere, and some you only get here. Development is happening on GitHub at the time of writing. If you have any issues or feature ideas, please let me know by opening an issue on GitHub (you can also open a ticket here if you want, but I don't look at them that often). There are packages for Windows (x86_64), macOS (aarch64) and Linux (Debian, AppImages for amd64/aarch64, TinyCore). -
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PsiNorm
A norm calculator for neuropsychological tests for daily use in clinic
Our premise when starting this project was that why do we have to dig through arrays of normative values to find the group our patient belongs to. Then proceed to manually calculate its z score and find out where it is on the percentile graph, when we could have a software that could do it for us. We weren’t able to find one in the literature. Thus came the PsiNorm. Currently only a demo for english exists, while Turkish adapted version is fully functional. If you'd like a version adapted to your patient population/language please contact us at Contact e-mail: psinormsoftware@gmail.com -
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subnetcalculator
Basic subnet calculator written in Python.
Based on the IP address and subnet mask input from the user, the following values are calculated: #1. Network address #2. Broadcast address #3. Number of valid hosts #4. Wildcard mask #5. Number of mask bits (CIDR notation) #6. Random IP addresses from the subnet. -
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BMI Calculator app
Desktop application to calculate the Body Mass Index (BMI)
Enter your weight in kg and height in centimetres to calculate your Body Mass Index to stay fit physically and healthy! The BMI is displayed in different colors such as, 🟪 Purple - Very severely underweight 🟦 Blue - Underweight 🟩 Green - Healthy 🟨 Yellow - Overweight 🟧 Orange - Obese 🟥 Red - Extremely obese Download BMI Calculator today -
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Beerans Calculator Suite
All-in-one calculator for everyone!
A free, fully offline calculator suite available as both a **Progressive Web App** and a **Windows desktop app** — **55 calculators across 8 categories**, no ads, no subscriptions, no account required. PWA — Install as an App Beeran's Calculator Suite is a **Progressive Web App** — install it from your browser with no App Store required. ### Android (Chrome) 1. Open Chrome and go to **[beeranscalculatorsuite.com](https://beeranscalculatorsuite.com)** 2. Tap the **⋮ menu** → **"Add to Home screen"** 3. Tap **"Add"** — the icon appears on your home screen ### iOS (Safari) 1. Open Safari and go to **[beeranscalculatorsuite.com](https://beeranscalculatorsuite.com)** 2. Tap the **Share button** (box with arrow) at the bottom 3. Tap **"Add to Home Screen"** → **"Add"** > PWA installation on iOS requires Safari. Chrome on iOS does not support "Add to Home Screen" for PWAs. -
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BitrateCompressionCalculator for Python
A simple Python utility to calculate file size from bitrate.
BitrateCompressionCalculator for Python (BCCpy) is a very simple application for calculating a file size from length and bitrate. BCCpy came about as the result of my beginning to learn Python and recreating the basic functionality of a simple VB program I wrote back in 1999. Since I was never very proficient with Visual Basic (or Applesoft BASIC for that matter); this application is very basic and could use lots of improvements. I'll implement them as I learn them. As of October 6, 2018; I have "abandoned" the project. I have actually forgotten everything I know about Python since writing this and other than adding error handlers; I really don't know how much further I could take it. I wanted to build a simple calculator, and I did. -
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That project aims at providing a clean API and a simple implementation (C++ library) of an Airline-related Seat Inventory Availability Calculation system. That library uses the Standard Airline IT C++ object model (http://sf.net/projects/stdair).
