170 cm 2 54 cm per inch 66 93 inches 5 feet 12 per foot 60 inches gives 6 93 inches rounding off gives 5 feet 7 inches It sort of seems that what you did got the 5 7 combined to 57 5 57 does not make much sense 5 57 would actually be 9 8 Decimal feet such as 5 57 feet is only used by American surveyors At least the last time I checked Everybody else but us Yankees are using a more rational system For more information on the convert template see template convert Cheers Ping me with u Jim1138 and sign or message me on my talk page