FlexUnits

Regardless of the project that you're working on, the Internet is filled with all sort of applications that could assist you. One of them is FlexUnits.
It's a neat software solution that allows you to instantly convert units and manage results. You can convert angle, area, length, force, pressure, temperature, density and many more units.

Straightforward and intuitive graphical interface

The application sports a really simple and lightweight graphical interface, the toolbar gives you access to various sections and some options that you can adjust. It's available in multiple languages, including English, French, German or Spanish.
It doesn't have any customization options, but it would have been nice if you could switch to a more compact view. If you're having trouble getting accustomed to the application, you can check the developer's website for more information.

Convert units easily

All units available inside the application are arranged into multiple categories, use the drag menu to view and pick the units of measurement that you would like to work with.
Each category comes with a specific set of options that you can use, set the starting and end value before you start converting. You can convert acceleration, angle, area, density, energy, force, length, mass, moment of force, power, pressure, temperature and many more units.
Results are displayed instantly and you can add them to a log and use them later if you want.

Some more tools and features

You can edit dimensions for each conversion unit and make some adjustments to them. It also comes with a shortcut to the default Calculator installed on Windows computers. Unit conversions can include offsets as well as multipliers.
This is useful for dimensions like temperature, where not ever scale shares the same zero value. All in all, FlexUnits is a very useful application for making all sort of unit conversions on your computer and keeping a log with all the results.