more digits »

About

In March 2001, the official web site for Pi Day was born.  As a high school calculus student, Dan Hellerich registered the domain name piday.org and put together a few informative web pages about Pi and Pi Day. The web site is now produced by both Dan Hellerich & Kevin Fusselman as a part of our very tiny company 314 Solutions, Inc.

In 2009, we were excited that with encouragement by the Association for Competitive Technology and other advocates, the U.S. House of Representatives passed a resolution recognizing a “National Pi Day” to promote math & science education. Read the text of 111th Congress H. Res. 224.

Today, this web site aims to be the online hub for everything related to Pi, and to promote fun with math.  Your participation is what helps makes this a reality:  Share links & information with us by participating in our Discussions/Comments posts, or by e-mail at ideas@piday.org.  Tell us how you celebrate Pi Day and take pictures of your celebrations. Send stuff our way, and if you see a pi-related website or pi-related products, get in touch & we’ll link it up.

Make sure you don’t forget about Pi Day next year: We’ll send you a friendly e-mail reminder, just sign up for our once-a-year newsletter.