Overview
What is Kalculator?
Kalculator : A simple, yet efficient Yahoo! widget that will add a calculator to your desktop, able to perform both basic and advanced mathematics functions
In depth
A closer look at Kalculator
Kalculator is a desktop widget that wraps up a basic calculator for the average user. It features support for basic mathematical functions, as well as for some trigonometric operations.The widget runs on top of the Yahoo! Widget Engine, without which it cannot launch. Aside from this dependency, there are no other requirements.In order to accommodate the program on your system, simply double-click it and give it permission to install, after which you can get acquainted with its minimalistic and user-friendly GUI.By default, the widget is set to show the numerical view, which allows for a restricted set of operations such as additions, multiplications, subtractions and divisions.If you’re looking for more advanced functions, press the button labeled ‘fun’, at which point you will be presented with a few trigonometric operators such as sin, cos, tan, asin, acos, atan, square root, logarithm, exponent and inverse functions (1/x).The precision of the results is pretty satisfactory, of about thirteen decimals - quite alright compared to other calculators. What bothers though is the fact that you have to switch between the numerical and ‘fun’ views in order to input the numbers you want to operate in the latter.A simple right-click on the widget reveals another set of features, amongst which the possibility to convert length, mass, volume, temperature, as well as to show the HEX representation of a given number.As far as customizations are concerned, you are provided with a few built-in skins that can change the program’s appearance, as well as with options to tweak the opacity of the interface.On an ending note, Kalculator is rather a basic application that cannot compete with a scientific number cruncher, because of its limited functionality. It appears that it won’t be receiving updates anymore, since Yahoo! Widget Engine itself has been closed down a while ago.
Verdict
Should you download Kalculator?
Kalculator runs on
Windows 9X/ME/2K/XP/2003/Windows 10/11
and is available under the
Freeware
license
— the installer is 262 KB.
We’ve catalogued it under
System.
✓
Verified clean. Every Kalculator build on SoftLookup is scanned for viruses, spyware, adware, trojans and backdoors. We re-test on every update.
Sponsored
At a glance
Kalculator specifications
- Last updated
- Nov 11, 2025
- License
- Freeware
- Operating system
- Windows 9X/ME/2K/XP/2003/Windows 10/11
- File size
- 262 KB
- Price
- Free
- Page views
- 560
Help fellow users decide. Share your experience with Kalculator.