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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

EVSE Fast Charging Network: Challenges for Calibration and Traceability

New Year’s Eve 2023 Marked the Retirement of the U.S. Survey Foot

NIST Office of Weights and Measures – National Voluntary Laboratory Accreditation Program Partnership: New Faces and New Opportunities

Upcoming Events

5841 Mass Metrology Seminar

Mon, Apr 10 - Fri, Apr 21 2023
The Mass Metrology Seminar is a two-week, "hands-on" seminar. It incorporates approximately 30 percent lectures and 70