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.

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Recent news

2022-06-30
The theme for the 2023 IDM is Mathematics for Everyone! Learn more.
2022-03-10
The 2022 IDM is part of the activities of the International Year of Basic Sciences for Sustainable Development 2022 (IYBSSD 2022).
2021-11-05
Our event map is back online, showing events for the 2022 celebration. Planning an avent? Let us know!
2019-11-26
UNESCO proclaimed March 14 as the International Day of Mathematics on the 40th session of the General Conference on November 26, 2019.

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.

Take a look back at the celebrations, themes and worldwide challenges of the
2020 and 2021 editions of the International Day of Mathematics.

Join the 2022 celebration

The best way to celebrate the IDM is to host your own event.

Organize an event

Discover ideas and activities to celebrate with your community or in the classroom.

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Publish it in our map

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Available a few months before IDM

People and organizations all over the world announced events in their cities:

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Share news about your IDM activities using the hashtag #idm314.

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 the 2023 International Day of Mathematics is Mathematics for Everyone

The theme was proposed by Marco Zarco Rotairo of the Trece Martires City National High School at Indang, Cavite, Philippines.

“I believe that Mathematics should be for everyone because all of us have mathematical ability, but only with varying extent and degree. Also, we must let everyone enjoy the wonders of Mathematics. The notion that Mathematics is only for the gifted and the genius must change.”

The same theme had also been proposed for IDM 2022 by the London Mathematical Society, based on the priority to improve equality, diversity, and inclusion (EDI) in the mathematical community.

Others also proposed this theme, with slight variations in the wording. Blanca Margarita Parra Mosqueda, from ENES León, UNAM, León, Mexico, says:

“Everyone needs mathematics in every aspect of their life. It is not only for specialized professional issues; it is not only for those who have a supposed gift. It is for everyone, every day.”

According to Fin McLaughlin from Cabot Learning Federation, Bristol, UK:

“Many see themselves as not being mathematical or that maths is not for them and yet it is for everyone and everyone is capable of thinking mathematically.”

Luis Miguel Paz Corrales, from Universidad Pedagógica Nacional Francisco Morazan, Langue, Valle, Honduras, adds:

“In my opinion, access to mathematics should be democratized for everyone. Because traditionally, it has been believed that it is only for those who possess certain types of problem-solving skills. And research, mainly in Mathematics Education, has shown that Mathematics is compulsory all over the world because it contributes to the formation of competent citizens.”