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Weights & measures

Overview

NIST works to improve the accuracy of measurements, enhance consumer protection, foster fair competition, and facilitate economic growth and trade through technical activities that promote uniformity in national and international legal metrology laws, regulations, standards, test procedures and enforcement.

The Research

Projects & Programs

International System of Units (SI)

Ongoing
The International System of Units (SI) provides definitions of units of measurement that are widely accepted in science and technology and which set measurement

Additional Resources Links

News

Cameras and equipment set up in the studio in front of a table

NIST Office of Weights and Measures Launches Studio 220

Graphic image with scale in front and person typing on a laptop in the background. Text on image reads: NIST Office of Weights and Measures, NIST SP 2200 Legal Metrology Publication Series.

NIST Office of Weights and Measures Launches New SP 2200 Legal Metrology Publication Series

Infographic comparing characteristics of a checker vs. an inspector

Quantity Versus Quality of Inspections – Taking Shortcuts

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