Standards Index · NIST

NIST SP 330:2019

The International System of Units (SI)

OFFICIAL SOURCE ↗ FIND MENTIONS IN THE ATLAS

Status: Current
Publisher: NIST
Year: 2019
Discipline: Standards & Units

What it covers

The US edition of the SI Brochure reflecting the 2019 redefinition in which all seven base units derive from fixed defining constants. Freely available.

Summary written for this index — consult the official text for normative requirements.

Related standards

ISO 80000-1:2022 Quantities and units — Part 1: General Current OIML D 8:2004 Measurement standards — Choice, recognition, use, conservation and documentation Current NIST SP 811:2008 Guide for the Use of the International System of Units (SI) Current