ISO 80000-1:2009 gives general information and definitions concerning quantities, systems of quantities, units, quantity and unit symbols, and coherent unit systems, especially the International System of Quantities, ISQ, and the International System of Units, SI.
The principles laid down in ISO 80000-1:2009 are intended for general use within the various fields of science and technology and as an introduction to other parts of the Quantities and units series.
Ordinal quantities and nominal properties are outside the scope of ISO 80000-1:2009.
ISO 31-0:1992/Amd 1:1998Withdrawn
ISO 31-0:1992/Amd 2:2005Withdrawn
ISO 1000:1992/Amd 1:1998
ISO 80000-1:2009Stage: 95.99
Corrigenda / AmendmentsWithdrawn
ISO 80000-1:2009/Cor 1:2011
Got a question?
Check out our FAQs
+41 22 749 08 88
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)
Keep up to date with ISO
Sign up to our newsletter for the latest news, views and product information.