This Microsoft Excel Add-In provides very powerful unit conversion functionality. It's tight integration with the Excel environment allows easy access through the menus and toolbars.
The main unit conversion functionality is available as a user defined function. This can be accessed from the Insert Function dialog or by simply typing it into a cell.
Units are defined in a simple text file, which can be modified if new ones are required. However most units are already defined and new derived units can be generated on the fly (e.g. kg.m/s). Dimensional Analysis is used to ensure that the conversion is legitimate.
A fully working evaluation with nag screen is available to download from http://www.unit-conversion.com/downloads.aspx. Online help and comprehensive examples are provided to get you up and running as quickly as possible.
Features
Derived units can be added on the fly (eg. kg.m/s)
You will receive download instructions for a copy of the Add-In. You don't need to download another copy if you've already installed the evaluation, simply request an activation code.
You will receive an email with a username and password that allows you to download the program. The login information will be valid for 3 days.