NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
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.
Neutrinos are the lightest elementary particles in the universe. But exactly how much do they weigh? For three decades, physicists have sought answers to this
The technology, which may someday be as portable as a smartphone, promises faster and more accurate measurements of radiation exposure, potentially saving lives
Using detailed simulations, researchers at the National Institute of Standards and Technology (NIST) and their collaborators have demonstrated that a class of
Researchers at the National Institute of Standards and Technology (NIST) have developed one of the first all-in-one instruments for realizing the most up-to
Scientists at the National Institute of Standards and Technology (NIST) have taken a crucial step forward in building a large-scale quantum communications
This new result contributes to the international effort to define the second with a much greater level of accuracy than before, enabling new scientific and
The NIST Metric Program provides a wide range of educational materials to help students learn to apply the International System of Units (SI), commonly known as
NIST OWM will welcome a full class of students to its Advanced Mass Metrology course at NIST’s Gaithersburg, Maryland campus at the end of this July. This nine
OWM is ramping up a new series of metrology training for the testing and verification of electric vehicle supply equipment (EVSE). This August, in conjunction
OWM continues to host a series of Information Hours, or "Info Hours," to feature current weights and measures, laboratory metrology, or documentary standard
In early June, over 115 metrologists from state, county, and federal government laboratories gathered with manufacturing and industry laboratory metrologists in
The days when a telephone was just a device to make phone calls are long gone. Nowadays, almost everybody has a smartphone with the capability to use it as a
Researchers at the National Institute of Standards and Technology (NIST) and their colleagues have overcome a key obstacle to measuring gas pressure with a
Broadcast as a free public service, the beacon can be used anywhere an independent source of random numbers would be useful, such as selecting jury candidates
NIST engineer Leon Chao never dreamed his childhood fascination with LEGOs would fit together with his professional life. But a working LEGO model he and his
World Metrology Day (20 May 2025) marked the sesquicentennial, or 150th anniversary, of the Meter Convention. NIST and the Office of Weights and Measures (OWM)
While exploring a box of early 20th century index cards in the NIST archives, I stumbled upon two that starkly illustrated one of NIST's missions – legal
Imaging antique coins with beams of low-energy neutrons, researchers at the National Institute of Standards and Technology (NIST) and their colleagues have
Using an electron beam to image the tiniest of defects and patterns on microchips, the scanning electron microscope (SEM) has long been a mainstay of the
In a physics first, a team including scientists from the National Institute of Standards and Technology (NIST) has created a way to make beams of neutrons