Contact us


This is a free online calculation service which aims to provide higher calculation accuracy, ease of use, and fun.
Please read the following before contacting us:

  • Refrain from sending e-mail which is unrelated to this calculation service.
  • Make sure that your question is not answered in the Frequently Asked Questions(FAQ).
  • Note that we may not answer your question even if it is related to this calculation service.

  •  For Casio product/support information, please click here
     For contacting us, please click here.

     Email: keisan-en@casio.co.jp