The CONVERT specifier asks what type of data conversion is in effect for a file. It takes the following form:
| 'LITTLE_ENDIAN' | If the file is connected with little endian integer and IEEE® floating-point data conversion in effect |
| 'BIG_ENDIAN' | If the file is connected with big endian integer and IEEE floating-point data conversion in effect |
| 'CRAY' | If the file is connected with big endian integer and CRAY® floating-point data conversion in effect |
| 'FDX' | If the file is connected with little endian integer and Compaq (formerly DIGITAL) VAXTM F_floating, D_floating, and IEEE X_floating data conversion in effect |
| 'FGX' | If the file is connected with little endian integer and Compaq VAX F_floating, G_floating, and IEEE X_floating data conversion in effect |
| 'IBM' | If the file is connected with big endian integer and IBM® System\370 floating-point data conversion in effect |
| 'VAXD' | If the file is connected with little endian integer and Compaq VAX F_floating, D_floating, and H_floating in effect |
| 'VAXG' | If the file is connected with little endian integer and Compaq VAX F_floating, G_floating, and H_floating in effect |
| 'NATIVE' | If the file is connected with no data conversion in effect |
| 'UNKNOWN' | If the file or unit is not connected for unformatted data transfer |