SI REFERENCE POINT
Version: 1.0 Beta, last update: 2024-02-14

SI Reference Point

This service constitutes the authoritative digital reference for the International System of Units (SI). It provides Permanent Digital Identifiers (PIDs) for the named SI units, SI prefixes, and defining constants, and a parsing tool to provide the PID and semantic model for compound units.

Application Programming Interface

Knowledge base

The knowledge base can be downloaded from this link: si.ttl
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The knowledge base can be downloaded from this link: units.ttl
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The knowledge base can be downloaded from this link: prefixes.ttl
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The knowledge base can be downloaded from this link: decisions.ttl
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The knowledge base can be downloaded from this link: constants.ttl
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The knowledge base can be downloaded from this link: quantities.ttl
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