If your work requires some of the more specialized
unit conversion categories, Excel integration, and the dependability of NIST-compliant conversions,
then Duometrix (certified by the Association of Software Professionals) may be the tool for you.
Duometrix is two programs -
an Excel Add-in and a Windows Standalone - that convert units for students,
scientists, engineers and technicians. Duometrix covers 489 units grouped in 10 subjects and
88 categories. The
fully-functional software is free to download and use for a