Units Converter Tool is a free utility that helps in conversion of multiple units at a once.
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a. The user can add, delete, or edit as many categories and as many units within each category as they want.; by right-click and choosing an option in the popup context menu.
b. Selecting an input unit causes the rest of the list to update automatically; to match the value of the selected unit.
c. The user can also write simple expressions (not just numbers) in the input boxes. For example instead of 3.75 it is possible to write 3+3/4.
d. User can hover the mouse over any unit in the list and then press CTRL+C to copy the corresponding value in the clipboard.
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Tested on Windows XP SP2, but it should also run on Vista and Win2k
Download UnitsConverter.zip
Open the "No Installer" folder and just run UnitsConverter.exe. Writes settings to an .ini file in the application folder.