Calcul.io is described as 'Offers realtime calculator with notepad like interface and advanced features like unit conversions, currency rates or date time math' and is a Calculator in the education & reference category. There are more than 50 alternatives to Calcul.io, not only websites but also apps for a variety of platforms, including Android, iPhone, Mac, Windows and iPad apps. The best Calcul.io alternative is Proton Sheets, which is both free and Open Source. Other great sites and apps similar to Calcul.io are Microsoft Excel, SpeedCrunch, Google Sheets and Qalculate!.
End-to-end encrypted spreadsheets enabling secure business data management, real-time collaboration with access controls, data analysis with automatic functions and visual tools, integration with cloud storage, and cross-device workspace access for teams.
Switzerland
Comprehensive spreadsheet tool offering advanced data management with features like pivot tables, data visualization, and customizable charts for professional use in creating detailed reports and analyses.
United States
SpeedCrunch is a free, fast, high precision open source algebraic calculator with an intuitive interface and many features, such as variables, syntax highlighting, functions, persistent input history & more.
Germany
EU
Cloud spreadsheet app featuring real-time editing, support for Excel and CSV import/export, chart building, formula functionality, integrated chat, access controls, cloud syncing, access via web and mobile platforms, scripting, embedding, templates, and Drive integration.
United States
Qalculate! is a multi-purpose cross-platform desktop calculator. It is simple to use but provides power and versatility normally reserved for complicated math packages, as well as useful tools for everyday needs (such as currency conversion and percent calculation).
SwedenEU
Lightweight Android calculator app offering basic and scientific calculation, customizable themes such as Dark, Light, Amoled, and Material You, history tracking, minimal permissions, portrait and landscape orientation, no internet required, and quick launch.
FranceEU
FinlandEU
Online math solver, equation editor and database, graphing calculator and science/engineering problem helper.
GermanyEU
High precision scientific calculator with full support for physical units (web and terminal versions).
GermanyEU
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
Free online scientific calculator from GeoGebra: perform calculations with fractions, statistics and exponential functions, logarithms, trigonometry and much more!
AustriaEU
