JOHNSON CONTROLS
182
Form 201.28-NM1.1
Issue date: 08/06/2021
The following factors can be used to convert from
English to the most common SI Metric values.
Table 34 -
SI metric conversion
Measurement
Multiply English unit
By factor
To obtain metric unit
Capacity
Tons refrigerant effect (ton)
3.516
Kilowatts (kW)
Power
Horsepower
0.7457
Kilowatts (kW)
Flow rate
Gallons/Minute (gpm)
0.0631
Liters/Second (l/s)
Length
Feet (ft)
0.3048
Meters (m)
Inches (in.)
25.4
Millimeters (mm)
Weight
Pounds (lb)
0.4536
Kilograms (kg)
Velocity
Feet/Second (fps)
0.3048
Meters/Second (m/s)
Pressure drop
Feet of water (ft)
2.989
Kilopascals (kPa)
Pounds/Square Inch (psig)
6.895
Kilopascals (kPa)
Temperature
Example: (45.0°F - 32°) x 0.5556 = 7.22°C.
To convert a temperature range (that is a range of 10°F)
from Fahrenheit to Celsius, multiply by 5/9 or 0.5556.
Example: 10.0°F range x 0.5556 = 5.6 °C range.