Introduction

The UDUNITS-2 package provides support for units of physical quantities. Its three main components are: (1) udunits2lib, a C library for units of physical quantities; (2) udunits2prog, a utility for obtaining the definition of a unit and for converting numeric values between compatible units; and (3) an extensive database of units.

For more information, visit the official UDUNITS-2 website.

Programming languages: C/Fortran

Brief description: database.

Open source license: GPLv3