Welcome to the Global Mental Calculators Association! Formed by a group of geographically diverse, elite mental calculators, the GMCA works towards expanding and strengthening the calculation community worldwide. Our mission is to foster collaboration between mental calculators, disseminate information regarding calculation, and host a first-of-its-kind mental calculation league. In more detail, the GMCA:

-Hosts the Mental Calculation League! In the Mental Calculation League, premier calculators engage in weekly competitions culminating in a postseason tournament. More information can be found in the Mental Calculation League tab

-Organizes periodic special events to highlight a diverse range of calculation talents and accomplishments

-Contributes to the generation of publicity for noteworthy computational events, achievements, and the field of computation

-Maintains this website!

The Board of the GMCA is primarily based upon recent performance at the Mental Calculation World Cup with six positions reserved for five distinct geographic regions and one at-large position. Currently, members include: two-time defending Mental Calculation World Cup champion Aaryan Shukla, three-time defending Mind Sport Olympiad calculation champion Kaloyan Geshev, renowned abacus master Jeonghee Lee, and the top Western competitors at the last three MCWCs — Samuel Engel and Wenzel Gruss.

We value inclusivity and actively seek advice and input from all members of the calculation community. We can be reached at contact@mentalcalculation.org.