Apr, 2009

Keisan Online Calculator service (hereinafter referred to as "this Service") is provided by Casio Computer Co., Ltd. This Service offers a variety of Free Online Calculators that enable you to carry out high accuracy calculation using arithmetic operation system with variable number of digits uniquely developed by Casio.This Service is designed to be used for all occasions. To this end, we will continue to pursue accuracy of calculation, easy to use and fun, and to provide you with more enhanced and user-friendly calculator service.

  • Please read Terms of use carefully before you use this Service. By accessing this website,you agree to be bound by these terms & conditions of use.

  • This Service may have a bug. In order to improve This Service, please send an email if you find a bug or have a request or suggestion.