Portable Numerimal

Portable Numerimal is a feather-light software utility you can use to perform conversions between decimal, hexadecimal, octal, binary and any base. It supports one- and zero-based calculations.
The tool comes in handy for users who frequently work with these numeral systems, such as math students. But it can also be handled by casual users who need to find out this information as fast as possible, especially if they don't have an active Internet connection at hand.

Doesn't require installation

The tool's not wrapped in an installer file. Instead, you can copy the downloaded files to a preferred folder on the disk or transfer them to a USB flash drive to seamlessly run Portable Numerimal on any machine. It doesn't need DLLs or other components to work properly, nor does it integrate new entries into the system registry.

Convert between various numeral systems

The interface is user-friendly, made from just one window with a simple design, where you can just type in values in a numerical system and view the calculation results for the remaining systems in real time, as there's no need to press any buttons, unless you have to specify a particular base number.
There are no options integrated for copying all information to the Clipboard, saving it to file, or printing it. However, you can set the tool to copy any of the values to the Clipboard and to remember the window position on exit, pick between zero- and one-based mode, adjust the panel's transparency, and change the UI language.

Evaluation and conclusion

The software product worked smoothly in our tests. It didn't hang, crash or prompt error messages. CPU and RAM usage was low, so it didn't hog system resources either.
All in all, Portable Numerimal offers a straightforward solution for performing conversions between decimal, hexadecimal, octal, binary and any base.