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170cm / 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. "