The EW-MFA Compiler supports countries to build Economy-Wide Material Flow Accounts. As well as providing the basic structure required for these accounts, a number of simple tools are also included for the calculation of some categories of materials, where those categories are not the result of simple summation. The EW-MFA Compiler should be used in conjunction with reading the global manual on EW-MFA "UNEP (2023). The use of natural resources in the economy: A Global Manual on Economy-Wide Material Flow Accounting".