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Unit Conversions

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The following conversions might be useful in setting up models in HOMER. If you need any additional conversions, let us know by email sent to support@homerenergy.com. A good online unit conversion website is www.onlineconversion.com.

Energy

1 kWh = 3,600,000 J

1 kWh = 3.6 MJ

1 kWh = 3,412.14 Btu

1 kWh = 0.0341296 therm [US]

Length

1 m = 1000 mm

1 m = 3.28084 ft

1 ft = 0.3048 m

Speed

1 m/s = 3.6 km/hr

1 m/s = 2.23694 mph

1 m/s = 1.94385 knot

1 mph = 0.44704 m/s

1 knot = 0.514444 m/s

Volume

1 m3 = 1000 L

1 ft3 = 0.0283168 m3

1 gallon [US, liquid] = 3.78541 L

1 barrel [US, petroleum] = 158.987 L

Flow Rate

1 m3/s = 1000 L/s

1 ft3/min [or cfm] = 0.4719475 L/s

1 ft3/s [or cfs] = 28.316847 L/s

1 gallon/min [US] = 0.0630902 L/s

Weight/Mass

1 kg = 1000 g

1 t [tonne] = 1,000 kg

1 kg = 2.20462 lb

1 lb = 0.453592 kg

1 ton [short] = 907.185 kg

1 ton [long] = 1,016.05 kg

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