World Metrology Day 2025 Events
In 2025, this page will be updated with information on various World Metrology Day Events planned around the world.
To request publication of your own 2025 event, please e-mail us a brief summary in Word, together with your logo and any other relevant information.
To view last year's events, please click here.

BIPM
Bureau International des Poids et Mesures
Posted: 2024-12-11 @ 13:55 UTC
150th anniversary of the Metre Convention
Join the Bureau International des Poids et Mesures (BIPM) and key players in the world of metrology as we celebrate the 150th anniversary of the Metre Convention!
When: 20-22 May 2025
Where: Paris | Versailles
How: Register online to attend one or more of our events
Our events will provide an opportunity to look back on 150 years of achievements in metrology since the creation of the BIPM and to recognize the vital importance of measurement science in all aspects of our lives. As well as honouring the past, we will offer our vision for the future of metrology, exploring innovations that will help define the landscape for the next 50 years and beyond.

Switzerland
Mettler Toledo
Posted: 2025-04-29 @ 13:50 UTC
Online Event:
Metrology Day Live Sessions
Online Event:
Metrology Day Live Sessions
To celebrate World Metrology Day, METTLER TOLEDO will unite metrology and mass calibration experts from around the globe in an exciting online event.
This inspiring event will include speeches by expert guests as well as training sessions hosted by our in-house experts.
Join this exciting 2-day online event on 13-14th May, to exchange expertise, knowledge and learn from the mass calibration community!

New Zealand
Measurement Standards Laboratory (MSL)
Posted: 2025-04-25 @ 12:10 UTC
New Zealand celebrates World Metrology Day 2025
The Measurement Standards Laboratory (MSL), in partnership with the Metrology Society of Australasia and Trading Standards for New Zealand, are excited to be holding two special events in Wellington, New Zealand. On 20 May 2025, we celebrate "Measurement for all times, for all people" and 150 years of the Meter Convention!.
In the afternoon, we’re holding a technical expo. There we’ll take a deep-dive into New Zealand's quality infrastructure and its impact on industry. We’ll hear from MSL scientists from around the lab, and learn more about the future of measurement science.
For the evening event, the programme will take us on a journey through the past, present and future; from the early days of the metric system in New Zealand, and the current impact of measurement on our daily lives, all the way to the quantum realm, where precision is measured at the subatomic scale.
MSL Director and Chief Metrologist, Dr Annette Koo says, "We always love celebrating metrologists and what they do for us – what better opportunity than the anniversary marked by this year's World Metrology Day? We will lift the lid on some of the treasures in New Zealand's own archives, and look ahead to how we are going to tackle the technology and global challenges coming our way."
More information about the event and registration page can be found on the MSL website here

Spain
Centro Español de Metrología
Posted: 2025-04-01 @ 13:22 UTC+2
Celebration of the 150th anniversary of the signing of the Metre Convention
In 2025, we celebrate the 150th anniversary of the Metre Convention (May 20, 1875), which established the International Bureau of Weights and Measures (BIPM), a cornerstone for having a coordinated universal metrology with a consolidated and widely used scientific language: the International System of Units (SI).
A Spanish scientist, General Carlos Ibáñez e Ibáñez de Ibero, was instrumental in the negotiation and subsequent implementation of this Treaty. This year also marks the 200th anniversary of his birth (Barcelona, 1825 - Nice, 1891), an anniversary worthy of all consideration and remembrance.
For all these reasons, during the week of May 12 to 16, the Centro Español de Metrología will celebrate these two anniversaries with four days of open doors and a (free and hybrid) workshop featuring prominent speakers.
Click here for more information and register to the workshop.
Celebración del 150 Aniversario de la firma del Tratado de la Convención del Metro
En 2025 celebramos el 150 aniversario de la firma del Tratado de la Convención del Metro (20 mayo 1875), que creó la Oficina Internacional de Pesas y Medidas (BIPM), piedra angular para disponer de una metrología universal coordinada con un lenguaje científico consolidado y ampliamente utilizado como es el Sistema Internacional de Unidades (SI).
Para la firma de este Tratado, un científico español, el General D. Carlos Ibáñez e Ibáñez de Ibero fue determinante en su negociación y posterior puesta en marcha. Este año se cumplen 200 años de su nacimiento (Barcelona, 1825 - Niza, 1891), efemérides digna de toda consideración y recuerdo.
Es por estas razones que durante la semana del 12 al 16 de Mayo, el Centrol Español de Metrología conmemorará estas efemérides con cuatro días de puertas abiertas y el 16 de mayo celebramos un seminario (híbrido y gratuito) con la participación de destacados expositores.
Siga este link para obtener mas información y registrarse en el seminario.

Uzbekistan
Uzbek National Institute of Metrology
Posted: 2025-02-11 @ 11:02 UTC
Uzbekistan Celebrates World Metrology Day 2025 and the 150th Anniversary of the Metre Convention
In 2025, the global metrology community marks a significant milestone – the 150th anniversary of the signing of the Metre Convention. On this occasion, alongside World Metrology Day, the Uzbek National Institute of Metrology (UzNIM) is organizing a series of events to emphasize the importance of measurements in science, industry, and everyday life.
UzNIM aims to unite its regional branches, scientific and educational institutions, as well as representatives from the industrial and private sectors on a single platform.
As part of the event, UzNIM will present:
✓ Expanded calibration and measurement capabilities;
✓ The role of metrology in ensuring quality control and innovation;
✓ Plans to establish a Quantum Metrology Center;
✓ Efforts to integrate digital technologies into metrological activities;
✓ Research on artificial intelligence for data processing, improving efficiency and contributing to sustainable development.
UzNIM invites all interested parties to join the celebration of World Metrology Day 2025 and the 150th anniversary of the Metre Convention and explore the future of measurement science.

Brazil
Fundação CERTI
Posted: 2025-04-28 @ 11:30 UTC
150 anos da Convenção do Metro
Metrologia para a Transformação Digital:
na jornada da indústria do futuro e das pessoas
que a constroem
150 anos da Convenção do Metro
Metrologia para a Transformação Digital:na jornada da indústria do futuro e das pessoas que a constroem
A Fundação CERTI tem o prazer de convidá-lo para um evento regional que estamos organizando no Centro de Metrologia e Instrumentação, localizado em Florianópolis, Brasil.
Inspirado pela comemoração do 150º aniversário da Convenção do Metro pelo BIPM, nosso evento tem como objetivo comemorar e divulgar este importante marco por meio de um painel de discussão alinhado com o tema deste ano: “Medidas para todos os tempos, para todas as pessoas”.

Mexico
ETALONET
Posted: 2025-04-04 @ 14:25 UTC+2
13th International Metrology Forum
ETALONET and the Biomedical Engineering Student Association (SEIMD) of the TEC de Monterrey are organizing the 13th International Metrology Forum to celebrate the 150th anniversary of the signing of the Metro Convention.
This event will take place on May 20, 2025, at the TEC de Monterrey facilities.
For more information and a program of activities, see: https://etalonet.com.mx/wmd/

SIM
Sistema Interamericano de Metrología
Posted: 2024-04-25 @ 10:02 UTC+2

Commemoration of 150 years of the Metre Convention
"150 years of comparable measurements in the world. Reflections on the past, present and future of metrology and the adoption and dissemination of the International System of Units (SI) in America"
Sistema Interamericano de Metrología (SIM)
Instituto Nacional de Metrología (INM)
May 8, 2025 - INM Auditorium- Bogota- Colombia
Click here to download the program of the event.
SIM celebrates 150 years of comparable measurements worldwide, a key milestone for science, innovation, and development in the Americas.
This May 8th from 13 to 17:30 UTC, we invite you to commemorate the history of metrology with us and reflect on its impact on scientific and technological advancement in the region participating in a hybrid event hosted by SIM and INM of Colombia.

Sweden
RISE - Research Institutes of Sweden
Swedish National Metrology Institute
Posted: 2025-02-12 @ 14:30 UTC
World Metrology Day 2025 in Sweden
Join RISE, Vinnova, Swedac, and the Swedish Radiation Safety Authority to celebrate the 150th anniversary of the Metre Convention. It will be an inspiring and educational day where we look back on how the idea of common measurement units conquered the world and the impact of the Metre Convention on Swedish competitiveness.
We will also turn our focus to the future:
- How must metrology evolve to meet future demands for reliable and traceable measurements?
- What role does metrology play in ensuring future competitiveness and in developing trustworthy AI?
A Platform for Metrology
By celebrating the 150th anniversary of the Metre Convention, we aim to create a platform for key stakeholders to come together and discuss the role of metrology in driving future innovations and solutions. We strive to foster collaboration between industry, government agencies, and academia, thereby strengthening Sweden’s future competitiveness.
When: May 20
Where: Navet Science Center in Borås, Sweden
The event will be held in Swedish.

BIPM
Bureau International des Poids et Mesures
Posted: 2024-12-11 @ 13:55 UTC
150th anniversary of the Metre Convention
Join the Bureau International des Poids et Mesures (BIPM) and key players in the world of metrology as we celebrate the 150th anniversary of the Metre Convention!
When: 20-22 May 2025
Where: Paris | Versailles
How: Register online to attend one or more of our events
Our events will provide an opportunity to look back on 150 years of achievements in metrology since the creation of the BIPM and to recognize the vital importance of measurement science in all aspects of our lives. As well as honouring the past, we will offer our vision for the future of metrology, exploring innovations that will help define the landscape for the next 50 years and beyond.

Brazil
Fundação CERTI
Posted: 2025-04-28 @ 11:30 UTC
150 anos da Convenção do Metro
Metrologia para a Transformação Digital:
na jornada da indústria do futuro e das pessoas
que a constroem
150 anos da Convenção do Metro
Metrologia para a Transformação Digital:na jornada da indústria do futuro e das pessoas que a constroem
A Fundação CERTI tem o prazer de convidá-lo para um evento regional que estamos organizando no Centro de Metrologia e Instrumentação, localizado em Florianópolis, Brasil.
Inspirado pela comemoração do 150º aniversário da Convenção do Metro pelo BIPM, nosso evento tem como objetivo comemorar e divulgar este importante marco por meio de um painel de discussão alinhado com o tema deste ano: “Medidas para todos os tempos, para todas as pessoas”.

Switzerland
Mettler Toledo
Posted: 2025-04-29 @ 13:50 UTC
Online Event:
Metrology Day Live Sessions
Online Event:
Metrology Day Live Sessions
To celebrate World Metrology Day, METTLER TOLEDO will unite metrology and mass calibration experts from around the globe in an exciting online event.
This inspiring event will include speeches by expert guests as well as training sessions hosted by our in-house experts.
Join this exciting 2-day online event on 13-14th May, to exchange expertise, knowledge and learn from the mass calibration community!

Mexico
ETALONET
Posted: 2025-04-04 @ 14:25 UTC+2
13th International Metrology Forum
ETALONET and the Biomedical Engineering Student Association (SEIMD) of the TEC de Monterrey are organizing the 13th International Metrology Forum to celebrate the 150th anniversary of the signing of the Metro Convention.
This event will take place on May 20, 2025, at the TEC de Monterrey facilities.
For more information and a program of activities, see: https://etalonet.com.mx/wmd/

New Zealand
Measurement Standards Laboratory (MSL)
Posted: 2025-04-25 @ 12:10 UTC
New Zealand celebrates World Metrology Day 2025
The Measurement Standards Laboratory (MSL), in partnership with the Metrology Society of Australasia and Trading Standards for New Zealand, are excited to be holding two special events in Wellington, New Zealand. On 20 May 2025, we celebrate "Measurement for all times, for all people" and 150 years of the Meter Convention!.
In the afternoon, we’re holding a technical expo. There we’ll take a deep-dive into New Zealand's quality infrastructure and its impact on industry. We’ll hear from MSL scientists from around the lab, and learn more about the future of measurement science.
For the evening event, the programme will take us on a journey through the past, present and future; from the early days of the metric system in New Zealand, and the current impact of measurement on our daily lives, all the way to the quantum realm, where precision is measured at the subatomic scale.
MSL Director and Chief Metrologist, Dr Annette Koo says, "We always love celebrating metrologists and what they do for us – what better opportunity than the anniversary marked by this year's World Metrology Day? We will lift the lid on some of the treasures in New Zealand's own archives, and look ahead to how we are going to tackle the technology and global challenges coming our way."
More information about the event and registration page can be found on the MSL website here

SIM
Sistema Interamericano de Metrología
Posted: 2024-04-25 @ 10:02 UTC+2

Commemoration of 150 years of the Metre Convention
"150 years of comparable measurements in the world. Reflections on the past, present and future of metrology and the adoption and dissemination of the International System of Units (SI) in America"
Sistema Interamericano de Metrología (SIM)
Instituto Nacional de Metrología (INM)
May 8, 2025 - INM Auditorium- Bogota- Colombia
Click here to download the program of the event.
SIM celebrates 150 years of comparable measurements worldwide, a key milestone for science, innovation, and development in the Americas.
This May 8th from 13 to 17:30 UTC, we invite you to commemorate the history of metrology with us and reflect on its impact on scientific and technological advancement in the region participating in a hybrid event hosted by SIM and INM of Colombia.

Spain
Centro Español de Metrología
Posted: 2025-04-01 @ 13:22 UTC+2
Celebration of the 150th anniversary of the signing of the Metre Convention
In 2025, we celebrate the 150th anniversary of the Metre Convention (May 20, 1875), which established the International Bureau of Weights and Measures (BIPM), a cornerstone for having a coordinated universal metrology with a consolidated and widely used scientific language: the International System of Units (SI).
A Spanish scientist, General Carlos Ibáñez e Ibáñez de Ibero, was instrumental in the negotiation and subsequent implementation of this Treaty. This year also marks the 200th anniversary of his birth (Barcelona, 1825 - Nice, 1891), an anniversary worthy of all consideration and remembrance.
For all these reasons, during the week of May 12 to 16, the Centro Español de Metrología will celebrate these two anniversaries with four days of open doors and a (free and hybrid) workshop featuring prominent speakers.
Click here for more information and register to the workshop.
Celebración del 150 Aniversario de la firma del Tratado de la Convención del Metro
En 2025 celebramos el 150 aniversario de la firma del Tratado de la Convención del Metro (20 mayo 1875), que creó la Oficina Internacional de Pesas y Medidas (BIPM), piedra angular para disponer de una metrología universal coordinada con un lenguaje científico consolidado y ampliamente utilizado como es el Sistema Internacional de Unidades (SI).
Para la firma de este Tratado, un científico español, el General D. Carlos Ibáñez e Ibáñez de Ibero fue determinante en su negociación y posterior puesta en marcha. Este año se cumplen 200 años de su nacimiento (Barcelona, 1825 - Niza, 1891), efemérides digna de toda consideración y recuerdo.
Es por estas razones que durante la semana del 12 al 16 de Mayo, el Centrol Español de Metrología conmemorará estas efemérides con cuatro días de puertas abiertas y el 16 de mayo celebramos un seminario (híbrido y gratuito) con la participación de destacados expositores.
Siga este link para obtener mas información y registrarse en el seminario.

Sweden
RISE - Research Institutes of Sweden
Swedish National Metrology Institute
Posted: 2025-02-12 @ 14:30 UTC
World Metrology Day 2025 in Sweden
Join RISE, Vinnova, Swedac, and the Swedish Radiation Safety Authority to celebrate the 150th anniversary of the Metre Convention. It will be an inspiring and educational day where we look back on how the idea of common measurement units conquered the world and the impact of the Metre Convention on Swedish competitiveness.
We will also turn our focus to the future:
- How must metrology evolve to meet future demands for reliable and traceable measurements?
- What role does metrology play in ensuring future competitiveness and in developing trustworthy AI?
A Platform for Metrology
By celebrating the 150th anniversary of the Metre Convention, we aim to create a platform for key stakeholders to come together and discuss the role of metrology in driving future innovations and solutions. We strive to foster collaboration between industry, government agencies, and academia, thereby strengthening Sweden’s future competitiveness.
When: May 20
Where: Navet Science Center in Borås, Sweden
The event will be held in Swedish.

Uzbekistan
Uzbek National Institute of Metrology
Posted: 2025-02-11 @ 11:02 UTC
Uzbekistan Celebrates World Metrology Day 2025 and the 150th Anniversary of the Metre Convention
In 2025, the global metrology community marks a significant milestone – the 150th anniversary of the signing of the Metre Convention. On this occasion, alongside World Metrology Day, the Uzbek National Institute of Metrology (UzNIM) is organizing a series of events to emphasize the importance of measurements in science, industry, and everyday life.
UzNIM aims to unite its regional branches, scientific and educational institutions, as well as representatives from the industrial and private sectors on a single platform.
As part of the event, UzNIM will present:
✓ Expanded calibration and measurement capabilities;
✓ The role of metrology in ensuring quality control and innovation;
✓ Plans to establish a Quantum Metrology Center;
✓ Efforts to integrate digital technologies into metrological activities;
✓ Research on artificial intelligence for data processing, improving efficiency and contributing to sustainable development.
UzNIM invites all interested parties to join the celebration of World Metrology Day 2025 and the 150th anniversary of the Metre Convention and explore the future of measurement science.