International Day of Mathematics. March 14.

The International Day of Mathematics (IDM) is a worldwide celebration. Each year on March 14 all countries will be invited to participate through activities for both students and the general public in schools, museums, libraries and other spaces.

The proclamation of March 14 as the International Day of Mathematics has been adopted by the Executive Council of UNESCO at its 205th session. It is on the agenda of the 40th session of the General Conference of the UNESCO in November 2019 and if adopted it will have its first official celebration on March 14, 2020.

March 14 is already celebrated in many countries as Pi Day because that date is written as 3/14 in some countries and the mathematical constant Pi is approximately 3.14.

The International Day of Mathematics is a project led by the International Mathematical Union with the support of numerous international and regional organizations.

More information about the International Day of Mathematics Project

Join the celebration

You can attend or even organize activities wherever you are. From September 2019 this website will provide:

Free materials, projects, ideas and software.
For use in classrooms, large events or small activities for the general public.
A map of worldwide events and gatherings.
To help you find local initiatives or announce your own.
All content will be offered in multiple languages.
And under open licenses for free use, distribution and modification.

Keep in touch to learn when we make these materials available and find out about important news about this project.

Subscribe to our Announcement Newsletter

You will only receive one or two emails per month at most. Your personal data won't be shared with any third party nor used for any other purposes, and you can unsubscribe at any time.

A new theme every year

Every year we'll announce a new theme to flavor the celebration, spark creativity and bring light to connections between mathematics and all sorts of fields, concepts and ideas.

The theme for 2020 is

Mathematics is Everywhere

  • Mathematics help plan and manage economic and social systems enabling the move towards a sustainable use of resources.
  • We travel the world guided by precise mathematical calculations based on the position of the sun, stars and GPS satellites.
  • We explore the inside of the human body through CT scans and MRI by building images out of numerical data through mathematical algorithms.
  • We discover how human thought works by building AI software that can learn and make decisions through mathematic models.
  • We photographed a black hole and continue exploring the edges of the universe with mathematics.
More about the 2020 theme French Version

Support for the International Day of Mathematics

The International Day of Mathematics (IDM) is supported by the following international and regional organizations:

Organizations in the following countries expressed their support to celebrate the International Day of Mathematics:
Albania, Algeria, Argentina, Australia, Austria, Bangladesh, Belgium, Benin, Bielorussia, Botswana, Brazil, Bulgaria, Burkina Faso, Cameroon, Canada, Chile, China, Cuba, Czech Republic, Dominican Republic, Egypt, Ethiopia, France, Gabon, Germany, Ghana, Greece, Grenada, Iceland, India, Indonesia, Iran, Israel, Italy, Ivory Coast, Jamaica, Japan, Kenya, Lebanon, Republic of Korea, Madagascar, Malawi, Malaysia, Mexico, Morocco, Nepal, Netherlands, New Zealand, Niger, Nigeria, Norway, Pakistan, Papua New Guinea, Paraguay, Philippines, Poland, Portugal, Russia, Rwanda, Saint Lucia, Saudi Arabia, Senegal, Serbia, Solomon Islands, South Africa, Spain, Sudan, Sweden, Switzerland, Syria, Tanzania, Tunisia, Turkey, Uganda, United Kingdom, Uruguay, United States of America, Vietnam, Zambia, Zimbabwe.

The IDM website was created by IMAGINARY with support from the Klaus Tschira Stiftung.

© 2019 International Mathematical Union.