Browse free open source Java Calculators and projects below. Use the toggles on the left to filter open source Java Calculators by OS, license, language, programming language, and project status.

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  • 1
    Calcoo is a scientific calculator (with both RPN and algebraic modes) designed to provide maximum usability.
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    Downloads: 104 This Week
    Last Update:
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  • 2

    Logic Calculator

    A Calculator to perform logical operations

    The Logic Calculator is an application useful to perform logical operations. It has three modes: (1) Evaluation of logic formulae: In this mode we have the basic boolean operations (negation, conjunction, disjunction, conditional and biconditional) so the user can insert the logic formula and the Logic Calculator displays the truth table along with the models of the formula. (2) Logical entailment: In this mode the user can insert a number of premises followed by a number of conclusions, so the Logic Calculator displays the truth table of each premise / conclusion and the result of whether or not these premises logically entail the given conclusions. (3) Conversion of a formula to Disjunctive Normal Form (DNF) and Conjunctive Normal Form (CNF): In this mode the user inserts a logic formula and the Logic Calculator outputs its representation in both a DNF and CNF.
    4.7 out of 5 stars 3 Reviews
    Downloads: 20 This Week
    Last Update:
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  • 3
    Multi-Calculator

    Multi-Calculator

    Stylish design, versatile features – the ultimate calculator

    Multi-Calculator is a free, open-source Android utility application that combines mathematical calculations and everyday conversion tools. It provides a scientific calculator supporting arithmetic, logarithms, trigonometry, factorials, and mathematical constants. Users can convert measurements across categories such as length, area, volume, temperature, and speed. The application includes financial calculators for loans, investments, deposits, and taxes. Additional utilities cover date calculations, currency exchange, body mass index, statistics, and equation solving. It also provides a compass, random number generator, shopping assistant, and on-screen ruler. Built with Material Design 3, Multi-Calculator supports calculation history, floating windows, and home screen widgets. Its lightweight interface is available in several languages.
    Downloads: 2 This Week
    Last Update:
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  • 4
    Finanx 12c

    Finanx 12c

    Financial Calculator

    The Finanx 12c is a free software that mimics the HP-12C financial calculator. This software was developed for educational purposes. IT'S NOT RECOMMENDED using this calculator for professional calculations. If you find any bugs, please, let me know. Click "Bugs" in the menu bar to report bugs found.
    5.0 out of 5 stars 7 Reviews
    Downloads: 10 This Week
    Last Update:
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    Advanced Trigonometry Calculator

    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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    5.0 out of 5 stars 2 Reviews
    Downloads: 12 This Week
    Last Update:
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  • 6
    A simple CPU simulator whose goal is to make assembly learning easier. This goal is reached giving a simple calculator, called ENIAC, with a simple CPU, called vCPU. The vCPU's instructions are very simple and easy to understand.
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    5.0 out of 5 stars 1 Review
    Downloads: 18 This Week
    Last Update:
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  • 7
    This is a Hash Calculating tool that calculates MD2,MD5,SHA-1,SHA-256,SHA-384,SHA-512 hash of text or a file. This has GUI developed in java swings.All it needs is sun jre installed.
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    4.5 out of 5 stars 2 Reviews
    Downloads: 7 This Week
    Last Update:
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  • 8
    IPhone Calculator For Windows

    IPhone Calculator For Windows

    IPhone Calculator For Windows

    A Fully functional IPhone Calculator designed in JAVA. This is my first ever project which i completed in my spare time, i hope everybody enjoys it and can give me feedback to improve the application, if need be, email me at: keyte.miles@gmail.com
    Downloads: 12 This Week
    Last Update:
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  • 9
    Giacenze Crypto

    Giacenze Crypto

    Programma per il calcolo delle plusvalenze Cripto + analisi CSV CDC

    Il programma permette di calcolare le plusvalenze (calcolate attraverso il metodo del LIFO) derivanti dagli scambi di criptovalute un po' su tutte le piattaforme e sulla Defi, inoltre per gli utenti di Crypto.com c’è anche la possibilitΓ  di calcolare saldo e giacenza media della Carta Visa e del Fiat Wallet. Le istruzioni sul funzionamento sono reperibili qua : https://lucapasselli.github.io/GiacenzeCrypto/documentazione/ e qua : https://sourceforge.net/projects/giacenze-crypto-com/files/Documentazione/ Per ulteriori info potete unirvi al gruppo telegram https://t.me/+6kfy5mjov-I2ODY8. Codice Sorgente : https://github.com/Lucapasselli/GiacenzeCrypto Canale Youtube : https://www.youtube.com/@cryptofer82 Sito Internet : https://www.giacenzecrypto.it
    5.0 out of 5 stars 1 Review
    Downloads: 6 This Week
    Last Update:
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  • 10
    Smith Chart Calculator

    Smith Chart Calculator

    Smith Chart Calculator JAVA

    A small tool which allows all basic smith chart actions. This program was created for educational purposes. JAVA RUNTIME REQUIRED Tested on Windows. Some features may not available with other OS (e.g. copy to clipboard) GENERAL PUBLIC LICENSE There is a pdf help file online take a look in the files section. There is also a link available in the program itself.
    4.0 out of 5 stars 2 Reviews
    Downloads: 3 This Week
    Last Update:
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  • 11
    Very Basic java Calculator using java web start! All you have to do is click on "cal.jnlp" file to run the basic web start calculator.
    Downloads: 8 This Week
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  • 12
    Scientific Java Calculator for cell-phones and MIDP devices
    5.0 out of 5 stars 4 Reviews
    Downloads: 2 This Week
    Last Update:
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  • 13
    Downloads: 4 This Week
    Last Update:
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  • 14
    Wrong Answer Calculator

    Wrong Answer Calculator

    Wrong answer guaranteed, first time, every time.

    Just a little mindless fun using beghilos or calculator spelling.
    Downloads: 4 This Week
    Last Update:
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  • 15
    pj-net-tools

    pj-net-tools

    Pure Java Network Tools

    Pure Java Network Tools. Free portable cross-platform. Include: 01) ICMP-ping, 02) ICMP-traceroute, 03) DNS-check resolver, 04) Parallel Host TCP-scanner, 05) IP-calculator, 06) Syslog-server, 07) Local ARP-cache request, 08) Parallel Network Ping-Scanner, 09) Snmp-Get concrete value utility. 10) Parallel ICMP flood utility. 11) Parallel UDP flood utility. 12) TFTP-server. 13) NTP-server. 14) Host TCP-ping. 15) SNMP-MRTG traffic monitor. 16) Anonymous FTP-server. 17) Parallel Network TCP-scanner. 18) Parallel Network SNMP-scanner. 19) Parallel Network DNS-scanner. 20) Parallel SNMP-DoS. 21) Parallel HTTP/HTTPS-DoS Need JRE-1.8: https://www.oracle.com/java/technologies/javase/javase8-archive-downloads.html . Source - https://github.com/harp077/pj-net-tools . If you like this - put a star on https://github.com/harp077/pj-net-tools
    Downloads: 4 This Week
    Last Update:
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  • 16
    HashTool

    HashTool

    Easily calculate hash values.

    HashTool calculates the most common hash and hmac values of files and strings by using the "Bouncy Castle Java cryptography API".
    5.0 out of 5 stars 1 Review
    Downloads: 2 This Week
    Last Update:
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  • 17
    Fx702p

    Fx702p

    A Casio Fx702p handheld-computer emulator

    A fully-featured Casio Fx702p emulator including the calculator mode, a full basic implementation and a original debugger as well as some sample programs.
    2.3 out of 5 stars 3 Reviews
    Downloads: 6 This Week
    Last Update:
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  • 18
    Java arbitrary-precision calculator and expression parser. "Compiles" text equations into functors to be executed using the Java BigDecimal class.
    Downloads: 3 This Week
    Last Update:
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  • 19
    Elite Calculator

    Elite Calculator

    Elite Calculator - Accurate Math Solutions

    Elite Calculator Simplify your calculations with Elite Calculator, the ultimate tool for quick and accurate math solutions. Designed with a sleek interface and packed with features, it's your all-in-one math assistant. Key Features: πŸ”’ Standard Calculator: Perform basic arithmetic operations like addition, subtraction, multiplication, and division. πŸ“ Scientific Mode: Access advanced functions for trigonometry, logarithms, and more. 🎨 Customizable Themes: Switch between light and dark themes. πŸ“ Dynamic Font Adjustment: Ensures clear and readable calculations. 🌐 Offline: No data collection, no ads. ⌨️ Keyboard Shortcuts: Enhance productivity. Download now and make math effortless!
    Downloads: 3 This Week
    Last Update:
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  • 20
    pafcalc

    pafcalc

    DIY fertilizers calculator for planted acquariums

    This tool allows you to perform some calculations related to DIY and dosing fertilizers in planted aquariums.
    Downloads: 3 This Week
    Last Update:
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  • 21
    jRCaLc

    jRCaLc

    jRCaLc is a program designed to aid you in working with resistors.

    jRCaLc is a resistor calculator outfitted with various tools, meant to aid in work related to resistors.
    5.0 out of 5 stars 2 Reviews
    Downloads: 1 This Week
    Last Update:
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  • 22

    Correlation Calculator

    Calculates the correlation coefficient for 2 sets of numerical data.

    Calculates the Pearson correlation coefficient for two sets of numerical data. The user has the option to add values to either set of data with the corresponding Add button or the ENTER key. In addition, the user can select one or more values from each list at a time to remove them to change the calculation. The clear button will remove all values from its corresponding list. Any questions, comments, concerns, bug reports, suggestions, etc. contact David at dxm3269@rit.edu.
    Downloads: 1 This Week
    Last Update:
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  • 23
    A simple multi-platform DXM dosage calculator. Written in Java.
    Downloads: 1 This Week
    Last Update:
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  • 24
    Fitness Trainer

    Fitness Trainer

    Your own personal virtual trainer for Body & Mind.

    /*Requirement: Java Installed*/ With this project the user can measure if he/she has a healthy weight then then go on exploring the application. This project is perfect for every individual who want to become fit physically and mentally. Common questions like How to lose weight, gain weight increase height, build body, lose fat, run fast, Mindfulness, different types of exercises, What to eat and what not to, everything is available. The user needs to keep in mind that content of this application has been taken from many leading websites and is 100% verified to be effective.
    Downloads: 1 This Week
    Last Update:
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  • 25

    GBDave's Pipe Size Calculator

    HVAC Minimum Pipe Size Calculator

    Starting off as a simple LISP command in AutoCAD this HAVC pipe size calculator was migrated to a standalone Java application. Calculates HVAC minimum pipe ID based on GPM and FPS for numerous fluid types (found in the fluid density chart on EngineeringToolbox.com) Includes a table to automatically calculate riser piping sizes per floor. Read the README.txt file included in PipeSize.zip for instructions.
    Downloads: 1 This Week
    Last Update:
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