Best Open Source Calculators 2026

Calculators

Calculators Mac Italian ChromeOS Clear Filters

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

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1

PeaZip

Free Zip software and Rar extractor

PeaZip is a free archiver tool. The application provides an unified, natively portable, cross-platform file manager and archive manager GUI for many Open Source technologies like 7-Zip, FreeArc, PAQ, UPX. Create: 7Z, ARC, Brotl, BZip, GZip, PEA, TAR, WIM, XZ, ZPAQ, ZIP, Zstandard files and more Open and extract 200+ file types: ACE, CAB, DEB, ISO, RAR, ZIPX and more Features of PeaZip includes extract, create and convert multiple archives at once, create self-extracting archives (sfx), split files, strong encryption with two factor authentication, encrypted password manager, secure deletion, find duplicate files, calculate hashes, export task definition as command line script.

115 Reviews

Downloads: 1,524 This Week

Last Update: 2026-02-07
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2

BMI Calculator

This software is mainly intended to help people with weight problems, but it can be useful for everybody want to know his health status. It calculates the BMI (body mass index) of a person and his ideal weight.

Downloads: 0 This Week

Last Update: 2014-03-22
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3

EasterJ2ME

Easter Calculator for Mobile Phone J2ME compliant. You can calculate the date for several years or you can verify if one date is an Easter holiday or not.

Downloads: 0 This Week

Last Update: 2018-01-22
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4

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: 0 This Week

Last Update: 2018-01-22
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