One of the most popular alternatives to Windows Calculator is SpeedCrunch, which is free and open source. Other popular alternatives are Qalculate!, OpenCalc, Calculator You and GeoGebra Scientific Calculator. Calculators like Windows Calculator are a crowded field, with more than 100 alternatives for Windows, Android, Mac, iPhone and the web.
Numi is a handy calculator app for macOS. It allows to describe tasks the natural way and instantly get an accurate answer. For example, $20 in euro - 5% discount or today + 2 weeks. Numi is not limited to simple calculations, it can solve expressions of any complexity, with...
Russia
Open-source calculator app with Windows Calculator features including standard, scientific, and programmer modes, plus unit and currency conversions. Available for macOS, Linux, Android, iOS, and web, with an intuitive interface for both desktop and mobile devices.
Canada
Calculator++ is an advanced, modern and easy to use scientific calculator.
Russia
Hissab is a simple and intuitive calculator, unit-convertor and productivity application.
NumWorks designed an intuitive and evolutive graphing calculator to make learning maths easier.
France
EU
Frink is a practical calculating tool and programming language designed to make physical calculations simple, to help ensure that answers come out right, and to make a tool that's really useful in the real world.
United States
Calculator with percentages, powers and functions. History with comments that is synced across all your devices. Cursor for editing anywhere. Simple interface with dark and light themes.
OpalCalc is a brand new type of calculator for the PC. As easy to use as Notepad or a word processor, OpalCalc allows natural language in the sum and multi-line support so you can go back and adjust your previous calculations on the fly.
Calzy is a beautiful modern calculator for your everyday use. It helps you perform your day to day mathematical calculation in a more elegant way.
India
galculator is a GTK 2 / GTK 3 based calculator with ordinary notation/reverse Polish notation (RPN), a formula entry mode, different number bases (DEC, HEX, OCT, BIN) and different units of angular measure (DEG, RAD, GRAD).
