tCalc – simple Tcl/Tk calculator with scientific functions

tCalc is a graphical calculator designed for performing everyday and scientific calculations using a compact interface. It combines conventional arithmetic with a collection of mathematical functions, constants and conversion utilities.

The application provides an editable expression field, allowing users to enter and modify calculations rather than relying exclusively on calculator buttons. Previous calculations can be recalled using its history functionality.

tCalc supports a substantial collection of mathematical functions. These include trigonometry, logarithms, powers, roots, factorials and statistical operations. Functions for calculating different types of averages and other statistical values are also provided.

The calculator includes several predefined mathematical and physical constants, such as pi, Euler’s number, the speed of light and the gravitational constant.

Additional functions perform unit conversions, date and time calculations, and simple financial calculations. These capabilities extend tCalc beyond a basic desktop calculator while retaining a relatively straightforward interface.

The application also provides options for controlling numerical precision, changing the size of calculator buttons and keeping the window above other applications.

This is free and open source software.

Key Features

• Editable mathematical expressions.
• Calculation history.
• Configurable numerical precision.
• Resizable calculator buttons.
• Option to keep the calculator window above other windows.
• Supports mathematical functions available through Tcl.
• Trigonometric functions using degrees and radians.
• Hyperbolic and inverse trigonometric functions.
• Logarithms, powers, roots and factorial calculations.
• Mathematical constants include pi, Euler’s number and the golden ratio.
• Physical constants include the speed of light and gravitational acceleration.
• Statistical functions include arithmetic, geometric, harmonic and quadratic means.
• Additional functions calculate medians and Fibonacci numbers.
• Simple and compound interest calculations.
• Date and time difference calculations.
• Unit conversions include temperature, length and power.
• Command-line expression support.
• Cross-platform support – runs on Linux and Windows.

Website: github.com/thanoulis/tcalc
Support:
Developer: Thanos Zygouris
License: MIT License

tCalc is written in Tcl. Learn Tcl with our recommended free books and free tutorials.

This article was written with the help of a site visitor who completed this form. Help the site by suggesting new open source software.

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