Free calculation program software for windows

With the help of VAT Calculator you can easily calculate VAT and Tax. VAT calculator allows you to add or remove VAT (GST) from any price or product. Make your tax calculation with VAT Calculator directly from your desktop!

A very clever calculator for all business needs with the possibility to define complex calculations The RedMill calculator not only features everything of the windows-calculator or a normal desktop calculator, but also has very usable functions integrated. With the free calculation module you have even more functions available:
- define your own calculations (view rubrique calculation module)
- Check for updates (manually) via internet
- Online-Feedback via internet.
The calculation module is accessible over the corresponding menus in the calculator. With the calculation module you can:
- define your own calculations
- request entries from the user when executing the definition
- make calculations including complex formulas
- define algorythms
- check for conditions
- read and write data from and to the calculator
- create your program rendering your result from the definition upon execution
- send the results back to the calculator or into MS Excel
- start the stored calculation definition over the calculator-menu
With the calculation module the user can "program" their calculations in a simple way without even needing to know any program languages. Click together your calculations and call them from the menu in the calculator.
The calculator as well as the calculation module is freeware, free of advertising and downloadable under the GNU General Public license.
Main features:
- a history (like a paper strip) with the current calculations
- 2 Memory-functions
- unlimited nameable Memorylist
- the calculation of variants (2 calculations in one).
- print of one or both variants in MS Excel
- transfer the calculation to excel for correcting entries (creates excel-formulas)
- VAT/Currency calculation
- rounding to various digits, incl. commercial rounding (to 5 cents)
- save of the current values when quitting (to be activated)
- snapshot function
- time calculation (10:30 - 08:25)
- formula-calculation (20*(30+20)/2)
- logging (to be activated)
- change size of the history (control strip)
- Switch to a small box with entryfield only (less coverage of the background)
- Supports German and English (can be switched during work)
System requirements:
- VB Runtime

Spindle Calculator is a free application that assists in the calculation of spindle (or baluster) count and placement for building your deck and railings.
Maximum spindle gap is taken into consideration during calculation of both outer and inner spindles. Dimensions may be entered in either real numbers or as fractional based numbers.
Though Spindle Calculator is by default installed to your Startup program group, you can place it any program group you desire.

Sunrise Calculator computes and displays the times of sunrise and sunset, given a latitude, a longitude and a date.
The Widget can make allowances for altitudes of up to 15,240 metres (50,000 feet). The altitude compensation calculation, performed by the Widget, is not part of the published algorithm, on which the main calculation is based, and should be treated with caution.
This new version also computes and displays the times of moonrise and moonset.