Global Mental Calculators Association

Mental Calculation League!

Match videos available here and on GMCA Youtube page.

Qualifications for Season 2 begin in October 2024! Here are links to Season 1: Results, Standings, and Season Statistics.

Please visit “Mental Calculation League” section to Register for Season 2 (estimated to begin in October 2024) and for more information.

Practice “league simulator,” as well as other calculation simulators, are available here. The Calculation League app —with FAQ and an instructional video — is available here.