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Energy or Work - Conversion Factors
To convert from the unit in the first column to the unit in the second, multiply by the conversion factor in the third column.

Example
1 Btu = (1 x 0.0002928) Kilowatt-Hrs = 0.0002928 Kilowatt-Hrs
To Convert To Multiply By
Btu Kilowatt-Hrs 0.0002928
Btu Horsepower-Hrs 0.0003931
Btu Kilogram-Calories 0.252
Btu Kilogram-Meters 107.5
Btu Gram-Calories 252
Btu Foot-Lbs 778.3
Btu Joules 1054.8
Btu Ergs 10550000000
Calorie Kilowatt-hour 0.000001163
Calorie Horsepower-hour 1.55961E-06
Calorie Horsepower-hour (metric) 1.58124E-06
Calorie Joule 4.1868
Ergs Kilowatt-hrs 2.778E-14
Ergs Horsepower-hrs 3.725E-14
Ergs Kg-Calories 2.389E-11
Ergs Watt-Hrs 2.778E-11
Ergs Btu 9.48E-11
Ergs Kg-Meters 1.02E-08
Ergs Gram-Calories 2.389E-08
Ergs Foot-Pounds 7.367E-08
Ergs Joules 0.0000001
Ergs Grams-Cms 0.00102
Ergs Dyne-Centimeters 1
Foot-Pounds Kilowatt-hrs 3.766E-07
Foot-Pounds Hp-Hrs 0.000000505
Foot-Pounds Kg-Calories 0.000324
Foot-Pounds Btu 0.001286
Foot-Pounds Kg-Meters 0.1383
Foot-Pounds Gram-calories 0.3238
Foot-Pounds Joules 1.356
Foot-Pounds Ergs 13560000
Horsepower-Hrs kilowatt-hrs 0.7457
Horsepower-Hrs kg-calories 641.1
Horsepower-Hrs Btu 2547
Horsepower-Hrs kg-meters 273700
Horsepower-Hrs gram-calories 641190
Horsepower-Hrs foot-lbs 1980000
Horsepower-Hrs joules 2684000
Horsepower-Hrs ergs 2.6845E+13
Joules Kg-Calories 0.0002389
Joules Watt-Hrs 0.0002778
Joules Btu 0.000948
Joules Kg-Meters 0.102
Joules Foot-Pounds 0.7376
Joules Ergs 10000000
Kilogram-Calories kilowatt-hrs 0.001163
Kilogram-Calories hp-hrs 0.00156
Kilogram-Calories Btu 3.968
Kilogram-Calories kilojoules 4.186
Kilogram-Calories kg-meters 426.9
Kilogram-Calories foot-pounds 3088
Kilogram-Calories joules 4186
Kilogram-Meters Kilowatt-hrs 0.000002723
Kilogram-Meters Kg-calories 0.002342
Kilogram-Meters Btu 0.009294
Kilogram-Meters Foot-pounds 7.233
Kilogram-Meters Joules 9.804
Kilogram-Meters Ergs 98040000
Kilowatt-Hrs Horsepower-hrs 1.341
Kilowatt-Hrs Lbs of water evap. at 212°F 3.53
Kilowatt-Hrs Lbs of water ^ from 62°-212°F 22.75
Kilowatt-Hrs Kg-calories 860.5
Kilowatt-Hrs Btu 3413
Kilowatt-Hrs Kg-meters 367100
Kilowatt-Hrs Gram-calories 859850
Kilowatt-Hrs Foot-lbs 2655000
Kilowatt-Hrs Joules 3600000
Kilowatt-Hrs Ergs 3.6E+13
Watt-Hours Kilowatt-hrs 0.001
Watt-Hours Horsepower-hrs 0.001341
Watt-Hours Kilogram-calories 0.8605
Watt-Hours Btu 3.413
Watt-Hours Kiloram-meters 367.2
Watt-Hours Gram-calories 859.85
Watt-Hours Foot-pounds 2656
Watt-Hours Ergs 36000000000