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