Freeware Directory

Freeware - Calculators

SkinCalc is a free calculator featuring standard and advanced functionality, a spreadsheet interface, and skins. Skins make it possible to change the layout and functionality of the software with effects, which include translucency and non-rectangular shapes. More than 100 skins are available.

A fully featured calculator that is fast and convenient to use, A Better Calculator can be entirely operated by the keyboard. It has support for basic arithmetic, hexadecimal calculations with bitwise operators, trigonometric functions (sin, cos, tan etc), logarithms (base 10 and base e), customizable automatic rounding, variables to store numbers and functions to store complete expressions.

AddUp is a free calculator able to process non-trivial arithmetic expressions such as -(((1 + 2) * 3)4)% + 56e-7 / 8. Other featires - Edit previous calculations and re-calculate, cut and paste at will, save your work to a text file (automatic or manual), restore it later. Compact single-line mode or flexible multi-line mode, show buttons or hide them, separately adjustable font and button sizes. Flexible snap-on screen positioning to your preferred location. Enable/disable "always on top" style.

Currency calculator - emulation of a desktop accounting calculator with tape, easy and simple, can be operated entirely from the keyboard. Supports COPY/PASTE, UNDO for last operation.

This calculator is a computer implementation of an electronic hand calculator. It offers the following additional features: A history pane offering the versatility of a control tape ("tally roll"). The value stored in memory is permanently visible in a separate memory display and immediately reflects any changes made to memory. Independently from memory, you can set a number to use as a constant. You can then perform instant multiplications or divisions by this constant. This is particularly useful to quickly convert currencies.

Kelly is a desktop calculator - How simple can a calculator be? I tried to build the simplest one without any garbage, it stays on top and works well with Excel. Don't get distracted by it's size, I did all my tax on it :)

This is a small, easy to use, RPN calculator. All basic operations are handled and stack can store as many items as you want. RPN (Reverse Polish Notation)calculation is a smart way to compute numbers, results are stored into a stack for later use. If you are an expert in RPN you will love the quick access to functions, if you new to RPN, you won't be overwhelmed by too many buttons.

Is a little desktop calculator for the four basic arithmetic operations. Nevertheless it has some interesting features! The whole calculation can be saved just like any text file and also opened again later (e.g. to drag and drop a file into the text area). Or print out your calculation and file it on paper.

MIRACL Calc is a multi-precision fully-functioned calculator that can calculate up to 10,000 places! MIRACL Calc depends upon the MIRACL C/C++ library developed by Mike Scott at Shamus Software - http://indigo.ie/~mscott/

tabbyCalc is a minimalist Windows desktop calculator & mathmatical expression evaluator. Built-in functions like tan, cos, abs, factorial & more, directly enter expressions with the keyboard, saves screen position and size. With tabbyCalc, you won't need to use the pitiful default windows calculator ever again! Nor will you have to endure the awkward interfaces of some other replacement calculators I've seen. No big buttons or crazy skins, just a very functional and powerful calculator!

Soroban is the multiple precision arithmetic program which calculates using the same technique as an abacus. High-speed operation of the abacus, multiple precision arithmetic of a maximum of 50 figures, a rod, a bead, etc. can be customized.

Calcute is a free, compact, capable, tape calculator. You can process complex numeric expressions (-ln(1+2)*3% +sin(4 5/6)^7), edit past work, recalculate, cut and paste on the tape. You can save your work to a file (automatic or manual) and restore it later to continue working. You can enter exact fractional values like 2 1/3 instead of 2.33333... Group digits, swap period/comma for international users. Compact single-line mode or flexible multi-line editor, show or hide buttons, adjust font and button sizes and much more!

Jcalc is a miniature spreadsheet written in javascript, it lacks most of the extended functionality of other spreadsheets, instead concentrating on basic calculating capability and easily portable. Needs Internet Explorer 5+ to be installed.