just some handy conversions:
joule = 23.73042 x foot-poundal
joule = 684.9315 x lumen-second
joule (absolute) = 0.000948 x British Thermal unit
joule (absolute) = 9.43E-04 x British Thermal unit (39 F)
joule (absolute) = 9.48E-04 x British Thermal unit (60 F)
joule (absolute) = 0.23895 x calorie (gram) @ 15 C
joule (absolute) = 0.23918 x calorie (gram) @ 20 C
joule (absolute) = 0.23889 x calorie (gram; mean)
joule (absolute) = 0.000239 x calorie (kilogram; mean)
joule (absolute) = 3.78E-07 x cheval-vapeur heure
joule (absolute) = 9.869233 x cubic centimeter (atmosphere)
joule (absolute) = 0.000349 x cubic foot (atmosphere)
joule (absolute) = 10000000 x dyne-centimeter
joule (absolute) = 10000000 x erg
joule (absolute) = 0.73756 x foot-pound
joule (absolute) = 723.3 x foot-poundal
joule (absolute) = 10200 x gram-centimeter
joule (absolute) = 3.73E-07 x horsepower-hour
joule (absolute) = 0.99968 x joule (International)
joule (absolute) = 0.10197 x kilogram-meter
joule (absolute) = 2.78E-07 x kilowatt-hour
joule (absolute) = 0.009869 x liter (atmosphere)
joule (absolute) = 683.0601 x lumen-second
joule (absolute) = 1 x newton-meter
joule (absolute) = 0.000278 x watt-hour
joule (absolute) = 1 x watt-second
joule (International) = 1.00032 x joule (absolute)
joule per centimeter = 10000000 x dyne
joule per centimeter = 10200 x gram
joule per centimeter = 100 x joule per meter
joule per centimeter = 10.19716 x kilogram
joule per centimeter = 22.48 x pound
joule per centimeter = 723.3 x poundal
joule per meter = 100000 x dyne
joule per meter = 101.968 x gram
joule per meter = 0.01 x joule per centimeter
joule per meter = 0.101972 x kilogram
joule per meter = 0.22482 x pound
joule per meter = 7.23275 x poundal
joule per second = 1 x watt
joule per square meter = 2.39E-05 x langley


Bet you didn't know we had that many measurements, eh?
Sources: Chemistry 5th Ed. Textbook; TrapperKeeperNotes