In the end, Emma's calculation took the virtual machines about 121 days to complete.
March 14 was chosen as the global day of celebration because 3.14 translates to 3/14/YEAR in the American calendar.
Iwao, a computer scientist and software engineer whose official title is cloud developer advocate, used y-cruncher, a program created by USA software developer Alexander J. Yee that has been used in many previous pi record breakings.
Iwao says that this is the first time cloud computing has been used to calculate pi and break the record.
On her Tiwtter, Iwao describes herself as: "Neutral Good with Lawful Evil traits / Developer Advocate for Google Cloud Platform / Software engineer, gamer, queer, and feminist".
These are the last 97 digits of the 31,415,926,535,897 now calculated for pi.
Iwao said she has been fascinated with pi since she was 12, writes Google.
Pi is the ratio of a circle's circumference to its diameter.
Pi was first estimated thousands of years ago, and by the mid-20th century, mathematicians had calculated about 1,000 digits of the number, using a gear-driven calculator.
"We achieved this feat using y-cruncher, a Pi-benchmark program developed by Alexander J. Yee, using a Google Compute Engine virtual machine cluster", the post reads. When I was a kid, I downloaded a program to calculate pi on my computer, ' Emma said.
Her former professor and one time world record holder for pi, Daisuke Takahashi, helped her with advice and technical strategies.
'I'm really happy to be one of the few women in computer science holding the record, and I hope I can show more people who want to work in the industry what's possible'.
"Pi seems simple - it starts with 3.14", she says. No word yet on whether she will be celebrating her achievement the American way - by eating actual pie.