Mathematical constant celebrated on March 14 is the basis for calculations used in metrology, engineering and measurement technologies
Inmetro (National Institute of Metrology, Quality and Technology) highlighted this Saturday (March 14, 2026) the importance of the number Pi (π) for the science of measurements. The date marks Pi Day, celebrated internationally on March 14th.
The mathematical constant represents the ratio between the circumference of a circle and its diameter. It is an irrational and infinite number, usually approximated as 3.14159.
Although it is mainly known in mathematics classes, Pi is also fundamental for scientific and technological applications. It is present in calculations used in engineering, technology development and measurement systems.
At Inmetro, mathematical constants such as Pi are part of the scientific basis that supports activities such as instrument calibration, development of measurement standards and research in the areas of materials, energy and health. These studies help ensure the traceability and reliability of measurements used by industry and society.
According to the director of Scientific, Industrial Metrology and Technology at Inmetro, Danielle Assafin, mathematics is essential to ensure accurate measurements.
“Metrology transforms mathematical rigor into social trust. As we celebrate Pi Day, we reaffirm that mathematics is the foundation of quality and innovation”, he stated.
The date also reinforces the role of mathematics as a universal language of science. In 2019, UNESCO (United Nations Educational, Scientific and Cultural Organization) officially established March 14 as International Mathematics Day.
MATHEMATICS NOT DAY TO DAY
The mathematical concepts applied to metrology also have a direct impact on the population’s daily lives. Based on these principles, Inmetro works to verify fuel pumps, commercial scales, pre-measured products and other measuring instruments.
These actions help ensure that measurements used in commerce and industry are correct, contributing to more balanced consumer relations and greater consumer confidence.
