The convert command converts enemy (captured) populace into uncompensated workers. If the sector is not actually conquered, no civilians will be converted. If you convert all the civs in a sector, then the sector is no longer occupied (i.e. you become the "oldowner" of the sector).
Number to convert : 22 22 conquered populace converted in -1,-1 (30) 13 conquered populace converted in 1,-1 (13) 22 conquered populace converted in 3,-1 (30) 17 conquered populace converted in -2,0 (17) 22 conquered populace converted in 0,0 (36) 22 conquered populace converted in -1,1 (34) 22 conquered populace converted in 1,1 (34) 18 conquered populace converted in 0,2 (18) 22 conquered populace converted in 2,2 (45) Total new uw : 180
Note that there is a cost of 0.01 BTU's per civilian converted in addition to the registration fee of $1.5 per conversion. See also : Populace , Mobility , Occupation