Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Black background. Green lighting. Kilograms under glass domes.



Metrology is the science of measurement and its application. NIST's work in metrology focuses on advancing measurement science to enhance economic security and improve quality of life. 

Almost all of NIST’s research has a metrology component to it. NIST’s metrology-related resources and activities include  calibrations, standard reference materials, standard reference data, test methods, proficiency evaluation materials, tools that facilitate the evaluation of measurement uncertainty, measurement quality assurance programs, and laboratory accreditation services that assist customers in establishing traceability of measurement results.

A key component of NIST’s metrology work is metrological traceability, which requires the establishment of an unbroken chain of calibrations to specified reference measurement standards: typically national or international standards, in particular realizations of the measurement units of the International System of Units (SI). 

NIST assures the traceability to the SI, or to other specified standards, of measurement results that NIST itself provides, either directly or through an official NIST program or collaboration. Other organizations are responsible for establishing the traceability of their own results to national reference standards maintained by NIST or to other specified reference standards. Learn more about metrological traceability.

The Research

Projects & Programs

Quantum Transport Measurements

We are developing the foundational knowledge and measurement infrastructure that will facilitate the use of solid state systems with emergent quantum properties

Acoustic Techniques in Fluid Metrology

The Fluid Metrology Group leads the world in designing and using gas-filled acoustic resonators for measuring the thermodynamic temperature T, the Boltzmann

Additional Resources Links


‘The Last Artifact’ Brings Metrology to TV

Remember that documentary you saw that finally explained metrology and why measurements are critical to practically every aspect of modern life? Yeah, neither do I. Probably because that documentary doesn’t exist … Or does it? The Last Artifact, a new one-hour film that PBS stations are planning to broadcast starting this month, aims to fill that cinematic void by bringing metrology to the people

The Reason the U.S. Doesn't Use the Metric System

Webinars Now Recorded and Available On-Demand!

Update on NIST Activities for EVSE

Stay in Touch

Sign up for our newsletter to stay up to date with the latest research, trends, and news for Metrology.

Upcoming Events

5927 Fundamentals of Metrology

Mon, Jul 22 - Fri, Jul 26 2024
Course Description The 5-day Fundamentals of Metrology seminar is an intensive course that introduces participants to