The ISO/IEC Directives define the basic procedures to be followed in the development of International Standards and other publications.

There are, however, other documents containing guiding principles for standards development, which can also be found below.

Contact us

For questions about the ISO Directives please contact us on directives@iso.org

For any general questions on drafting ISO standards, please contact us on drafting@iso.org

Official Rules

Here are the official rules that state how to develop an ISO standard:

  • ISO/IEC Directives Part 1
    Official procedures for the technical work.

  • ISO/IEC Directives Part 2
    Principles and rules for the structure and drafting of ISO and IEC documents, together with the 2026 amendment covering management system standards drafting rules.

Supplementary Documents

Here are some supplementary documents that may help guide the standards development process:

Guides

Here is some information about Guides, which provide advice to standards writers and national standards bodies: