What Is ANSI?

ANSI, the American National Standards Institute, is a private nonprofit organization that coordinates the development and use of voluntary consensus standards in the United States. Founded in 1918 under the name American Engineering Standards Committee and renamed multiple times before adopting its current identity in 1969, ANSI does not write standards itself. Instead, it accredits the procedures of standards developing organizations (SDOs), approves their outputs as American National Standards (ANS), and represents U.S. interests in international standardization bodies. ANSI's predecessor, the American Standards Association (ASA), laid the institutional groundwork that ANSI inherited, including foundational standards in safety, metrology, and industrial practice.

ANSI sits at the center of the U.S. standardization infrastructure, connecting federal agencies, trade associations, professional societies, consumer groups, and academic institutions within a single voluntary framework. This coordination role distinguishes ANSI from standards bodies such as IEEE or ASTM, which both develop and publish standards in their respective technical domains.

Organizational Structure and Accreditation

ANSI accredits SDOs whose procedures satisfy its Essential Requirements: openness to participation, balance among stakeholder interests, absence of dominance by any single interest, transparent due process, and consensus-based decision-making. An organization seeking accreditation submits its development procedures and a description of its governance structure; once approved, it becomes an ANSI-Accredited Standards Developer (ASD) eligible to submit documents for ANS designation. The ANSI accreditation overview describes the application requirements, one-time fees, and ongoing compliance obligations that ASDs must meet. Large accredited bodies include IEEE, ASTM International, the National Fire Protection Association, and Underwriters Laboratories.

The American National Standards Process

An American National Standard is a document that has passed through an ANSI-accredited process and been approved by ANSI as meeting its procedural requirements. The ANS designation signals to purchasers, regulators, and trading partners that the standard reflects a broad consensus rather than the preferences of a single manufacturer or agency. Many federal agencies incorporate ANS by reference into regulation, making compliance with certain standards legally required in practice even though the underlying standards remain voluntary at their source. The ANSI introduction to the American National Standards process walks through the stages from proposal through public comment, resolution of appeals, and final approval.

International Coordination

ANSI is the sole U.S. representative to the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC), the two principal intergovernmental standardization bodies. Through these memberships, ANSI coordinates positions for U.S. participation in international technical committees, advocates for adoption of American standards as international standards, and manages the transposition of international standards into the American National Standards catalog. Joint standards under the ISO/IEC/IEEE series, such as ISO/IEC/IEEE 29148 on systems and software engineering requirements, illustrate the outcome of this coordination, merging national and sector-specific work into a single authoritative document. The ISO news release on the ISO-IEEE partnership describes how such collaboration is structured and which subject areas were initially targeted.

Applications

ANSI and the standards it administers have applications across a wide range of industries and regulatory contexts, including:

• Electrical and electronics safety testing, where ANSI-accredited standards underpin product certification requirements
• Information technology, through standards such as ANSI SQL and character encoding schemes
• Healthcare, where ANSI-accredited health informatics standards govern electronic health record interoperability
• Construction and manufacturing, where ANS specifications define materials, dimensions, and test methods
• Telecommunications, where ANSI-coordinated standards feed into international ITU frameworks