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).

Languages: English | File Size: 67 MB

Qalculate! — это многофункциональный кроссплатформенный настольный калькулятор. Он прост в использовании, но при этом обладает мощностью и универсальностью, обычно присущими сложным математическим программам, а также полезными инструментами для повседневных нужд (например, конвертация валют и расчет процентов).

Features include a large library of customizable functions, unit calculations and conversion, physical constants, symbolic calculations (including integrals and equations), arbitrary precision, uncertainty propagation, interval arithmetic, plotting, and a user-friendly interface (GTK, Qt, and CLI).

• All common operators — arithmetic, logical, bitwise, element-wise, (in)equalities
• Expressions may contain any combination of numbers, constants, functions, units, variables, matrices, vectors, and time/dates
• Fault-tolerant and flexible input parsing with verbose error/warning messages
• Calculate as you type
• Arbitrary precision with both rational and floating point numbers
• Complex and infinite numbers
• Propagation of uncertainty and interval arithmetic
• Both exact and approximate output (sqrt(32) = 4 × sqrt(2) ≈ 5.657)
• Simple and mixed fractions: 4 / 6 × 2 = 1.333… = 4/3 = 1 + 1/3
• All common number bases, as well as negative and non-integer radices, roman numerals, etc.
• RPN mode
• Highly customizable with a myriad of options for every aspect of the calculator

• Factorization and simplification
• Differentiation and integration
• Can solve most equations and inequalities
• Customizable assumptions (e.g. ln(2x) where x > 0 = ln(2) + ln(x))

• Over 400 flexible and diverse functions (trigonometry, exponents and logarithms, combinatorics, geometry, calculus, statistics, finance, time and date, etc.)
• Easily created and edited from the user interfaces, with support for different argument types, subfunctions, and custom conditions

• Over 400 diverse units and all standard decimal and binary prefixes
• Includes all SI units, as well as imperial, CGS, and atomic units, and more…
• Automatic and explicit conversion (e.g. ft + yd + m = 2.2192 m, 5 kg × m/s^2 = 5 N, 5 m/s to mph = 11.18 mph)
• Currency conversion with daily updated exchange rates
• Easily created and edited from the user interfaces

• All common basic constants (π, e, φ, etc.)
• Fundamental physical constants with 2022 CODATA values (including standard uncertainty and optional units)
• CSV file import and export
• Easily created and edited from the user interfaces (including by using simple assignment expressions, e.g. x = 2 s)
• Data sets with objects and associated properties (a data set with chemical elements is included)

• Uses Gnuplot
• Can plot functions or data (matrices and vectors)
• Can be customized using several options, and saved as an image

• Graphical user interfaces implemented using GTK and Qt
• Flexible expression entry with customizable completion, function hints, and continuous display of parsed expression
• Calculate as you type
• History list with support for comments, protection of individual items, search, and use of mathematical operations on previous results
• Customizable keypad with access to most features
• Context-dependent menu for conversion to suitable units and output formats
• Extensive menus with access to all functions, units, and variables, as well as most settings
• Everything but the expression entry can be hidden to minimize footprint and distractions (GTK version)
• Customizable meta modes (GTK) and workspaces (Qt) for quickly switching between different settings
• Dialogs for management of and easy access to functions, variables and units (with quick conversion)
• Dialogs for easy entry of all functions
• Create/edit functions, variables, matrices/vectors, units, and data sets
• Tools for quick conversion between number bases, floating point conversion, calendar conversion, and percentage calculation
• Convenient interface for plots and graphs
• Configurable keyboard shortcuts

Home Page - https://qalculate.github.io/

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Qalculate! 5.9.0 (x64) Freeware