Here you can find the link to the current (draft) version of the GNC Calculator Tool.
calculator tool_v2 is the original version which has been demonstrated on different occasions
calculator tool_v5 is a new version (available since March 2017), which has some added functionality:
- selection of multiple management practices simultaneously
- using own data, instead of pre-filled data
Please note - this is a Microsoft Excel (macro enabled) file. Furthermore: right click the file name and then save the file.