GRID Checksum Calculator

The GRID Checksum Calculator can be downloaded here. This tool can be used to calculate the checksum based on the Issuing Organization Number (ION) and Registration Donor Identifier (RDI) entries.

Version 1.0: GRID Checksum Calculator  xlsx (29 kB)

Your feedback is greatly appreciated and will help us to improve our ability to serve you and other users of our programs and tools.

      • If you would like to provide some feedback or make a suggestion about how we can improve our service, please email us.
      • If you are experiencing issues with the program, please contact us.

For information on the structure of the Global Registration Identifier for Donors (GRID) and the Issuing Organization Number (ION), see ST-015 Standard Global Registration Identifier for Donors: ION Database and GRID Rules