®
15
APPENDIX No 4
UNIT CONVERSION TABLE
Quantity
Metric Units
Imperial Units
Length
1 millimetre [mm]
x 0.003281 = foot [ft.; ’]
x 0.03937 = inc
h [in; ”]
1 metre [m]
x 3.281 = foot [ft; ’]
x 39.370 = inch [in; ”]
Volume
1 cubic metre [m
3
]
x 35.315 = cubic foot [ft
3
]
Air flow rate
1 cubic metre/hour [m
3
/h]
x 0.589 = standard cubic foot/min [SCFM]
Weight
1 kilogram [kg]
x 2.2046 = pound [lb.]
Pressure
1 kilopascal [kPa]
x 6.895 = pound square inch gauge [psig]
x 4.015 = inch H
2
O
Power
(capacity)
1 kilowatt [kW]
x 293.1 = million BTU/hr. [mmBTU/Hr]
Calorific
value
1 mega joule/cubic metre
[MJ/m
3
]
x 26.839 = BTU/ cubic foot [BTU/ft
3
]
Temperature
Deg. Celsius [°C]
Formula:
°C x1.8 + 32 = Deg. Fahrenheit [°F]
