udunits ☆

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Description:
Unidata unit conversion library

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: scientific units conversion library cli

Install: brew install udunits

About:
Udunits is a library and command-line utility for handling and converting units of physical quantities. It provides a comprehensive database of units and supports complex unit expressions, enabling precise scientific calculations. Its main value is ensuring data consistency and interoperability across different measurement systems in research and data analysis.

Key Features:

Extensive unit database including SI and non-SI units
Supports compound unit expressions (e.g., 'm/s', 'kg*m^2')
C library for programmatic integration and CLI tool for scripts
Automatic scaling and conversion between compatible units

Use Cases:

Standardizing climate and atmospheric data units in scientific workflows
Integrating unit conversion into custom data processing pipelines
Validating and converting units in engineering or physics applications

Alternatives:

pint – Pint is a Python-based unit library, whereas Udunits is a C library with a CLI, making Udunits more suitable for performance-critical or cross-language environments.
GNU Units – GNU Units is a command-line tool similar to Udunits, but Udunits is specifically designed for integration into scientific data systems like those used by Unidata.

Version History

Detected	Version	Rev	Change	Commit
Sep 11, 2025 3:01am		0	VERSION_BUMP	f36edd2e