IV CONVERSION FACTORS, VERTICAL DATUM, AND ABBREVIATED WATER-QUALITY UNITS Multiply By To obtain Length foot (ft) 0.3048 meter mile (mi) 1.609 kilometer Flow foot per second (ft/s) 0.3048 meter per second cubic foot per second (ft3/s) 0.02832 cubic meter per second Temperature To convert degree Celsius (°C) to degree Fahrenheit (°F), use the following formula: