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Metrology

Weights & Measures

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.

For more information about Weights & Measures, visit the Office of Weights & Measures (OWM) site.

Blog Posts

A researcher wearing a lab coat uses tongs to place a silvery sphere into a large scientific device as another researcher looks on.

One of the World’s Roundest Objects Is Helping to Build a Better Mass Measurement

Measurement in the Movies

Fisheye view of grocery store shelves packed with coffee products.

Weighing Your Purchases: How New Laws May Help You Become a Savvier Online Shopper

New NIST OWM Contacts System is Open for Business

The Office of Weights and Measures (OWM) Contacts System customer portal is open for business. NIST OWM officially launched the new online portal for the OWM Contacts System on September 3, 2024. The new portal is the primary hub for requesting OWM products and services, including OWM publications, training classes, and full access to your training history. New Landing Page We are excited to offer