Free universal converter software for windows

Universal Converter is a useful conversion utility that converts UK and US values to their Metric counterparts and conversely.
To do a conversion, select a category (length, speed, surface, temperature, volume, weight, etc.), select the kind of conversion to apply UK/US-to-Metric or Metric-to-UK/US and select the source and the target units.
The conversation is made on the fly as you type the source value.
The latest versions add some currency conversion, real-time time differences (in two places in the world at the same time) and country and phone codes.
The "Close to system tray" option allows you to run a single instance of the program and to automatically minimize it to the system tray (the part of the taskbar near the clock) when you close it. If you need the program again, simply double-click its icon in the system tray.

Universal Unit Converter 1 provides a fast and efficient solution to convert any numerical unit to any other unit. This utility is free for any use. Just send an email with your suggestions and also a demand for a fully working copy. I just want to know who likes or dislike my small effort. Also the full version precision will be accurate up to 15 digits. Please read the Help file in the package.

Energy Converter is a gadget that converts energy between wavenumbers (1/cm), electron Volts (meV) and frequency (GHz).
This is especially useful when doing spectroscopy.