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Elizabeth Benham (Fed)

Physical Scientist | Metric Program Leader

As the leader of the NIST Metric Program , Ms. Benham serves as the national advocate for the International System of Units (SI) in the United States. Her efforts are pivotal to realizing national policy goals to advance the SI as the preferred measurement system for trade and commerce and strengthen U.S. innovation and competitiveness in global markets. The Metric Program supports businesses, officials, educators, and the public in understanding and applying the SI across commerce, education, and daily life.

Through her leadership, the NIST Metric Program plays a vital role in supporting national measurement policy and advancing professional development in metrology. Ms. Benham is committed to raising professional metrology standards through targeted training development aligned with industry needs. Her efforts underscore the importance of the SI in fostering scientific literacy. Her dynamic approach combines policy implementation with public engagement, professional training, and Science, Technology, Engineering, and Mathematics (STEM) education outreach. She spearheads professional training initiatives and collaborates with K-12 educators to embed measurement science into classroom instruction to enhance STEM learning.

Projects

Stay up-to-date with the Office of Weights and Measures (OWM) learning events schedule to enhance your skills and knowledge. To sign up to receive OWM New via GovDelivery, click here. For inquiries or more information, reach Ms. Benham at TheSI [at] nist.gov (TheSI[at]nist[dot]gov).

professional activitieS

Special PublicationS

Awards

  • IEEE Outstanding Contribution Recognition for the development of IEEE Standard 280-2021, Letter Symbols for Quantities Used in Electrical Science and Electrical Engineering (2022)
  • U.S. Metric Association (USMA) Fellows Award (2021)
  • NCSLI Education and Training Award (2012)
  • Arthur S. Flemming Award (2011)
  • National Conference of Standards Laboratories International (NCSLI) Best Paper Award for Learning and Development (2011)
  • Measurement Science Conference (MSC) Joe Simmons Best Developer Award (2010)
  • NIST Bronze Medal for Superior Federal Service (2008)

News

OWM Welcomes Undergraduate Researchers

The Office of Weights and Measures (OWM) welcomes Yoon Thwel, a spring Professional Research Experience Program (PREP) intern and Matthew Kenzinger, a visiting

2024 NIST Internship Reflections

During the summer of 2024, the NIST Physical Measurement Laboratory’s ( PML) Office of Weights and Measures ( OWM) hosted two undergraduate students through the

Selected Publications

SI Measurement System Chart

Author(s)
Elizabeth J. Benham
This publication is a colorful chart explaining the 7 base units of the SI (International System of Units) and prefix symbols, featuring the Measurement League

Publications

Estimating How Big: The Metric Estimation Game

Author(s)
Elizabeth Benham, Kristen Dill, Dinelka Jagoda, Maryanne Amanze, Yoon Thwel
The metric system (International System of Units, SI) is easy to use and learn. The Metric System Estimation Game is a fun, hands-on activity that helps

NIST Special Publication 376, Metric Ruler

Author(s)
Elizabeth Benham, Kristen Dill
NIST SP 376, Metric Ruler is an educational tool designed to teach the International System of Units (SI) length measurements. The design includes approximate

Selected Blog Posts

Top 10 Tips for Teaching the Metric System

Calling all teachers, parents and students. It’s easy to learn the metric system — or, as it’s more formally called, the International System of Units (SI)

Busting Myths about the Metric System

This year will be the 45th anniversary of the Metric Conversion Act, which was signed on December 23, 1975, by President Gerald R. Ford. Normally, we celebrate
Created September 26, 2019, Updated August 18, 2025
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