Apps similar to kalker include Wolfram Alpha, which has a free version. Other options are SpeedCrunch, Qalculate!, Numbat and Google Calculator. You're spoiled for choice with Calculators like kalker: we list more than 25 alternatives for Windows, Android, iPhone, Linux and the web.
Wolfram Alpha is a "Computational Knowledge Engine" - different from a search engine, it answers factual queries directly by computing the answer from structured data, rather than providing a list of documents or web pages that might contain the answer.
United States
High-precision scientific calculator for Windows, macOS, and Linux, handling up to 50-digit calculations with complex numbers, units, constants, vectors, and matrices. It supports user-defined variables and functions, editable history, per-result formatting, and tabs.
Germany
EU
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
High precision scientific calculator with full support for physical units (web and terminal versions).
GermanyEU
Calculator provides simple and advanced mathematical functions in a beautifully designed app.
United States
A simple but powerful notepad calculator which evaluates expressions as you type.
Free online scientific calculator from GeoGebra: perform calculations with fractions, statistics and exponential functions, logarithms, trigonometry and much more!
AustriaEU
Ever wanted to work something out, but your default calculator isn't powerful enough, and it's not worth creating a spreadsheet for?
A simple yet powerful calculator that includes standard, scientific, and programmer modes, as well as a unit converter. It's the perfect tool to add up a bill, convert measurements in a recipe or other project, or complete complex math, algebra, or geometry problems.
United States
Qaltex is a tape-like calculator with straightforward interface and a lot of features. It is inspired by many other similar applications, but solves their disadvantages and at the same time it is empowered with some unique options and widgets.
Calculator is an application that solves mathematical equations and is suitable as a default application in a GNOME Desktop environment.
United States
