Convert Attojoule to Horsepower hour
Attojoule
The attojoule (aJ) is a unit of energy in the International System of Units (SI). It is equal to one quintillionth of a joule (0.000000000000000001 J). The attojoule is commonly used to measure extremely small amounts of energy, such as the energy content of individual photons.
The attojoule is derived from the joule, which is named after James Prescott Joule, an English physicist. The prefix 'atto-' signifies a factor of one quintillionth, making the attojoule equal to one quintillionth of a joule.
Horsepower hour
The horsepower hour (hp*h) is a unit of energy commonly used to measure the energy output of engines. It is equal to the energy expended by a one horsepower engine operating for one hour.
The horsepower hour is derived from the horsepower, which is a unit of power named after James Watt, a Scottish engineer and inventor. The horsepower hour measures the amount of energy used over time.
Convert Attojoule to other energy-converter units
1 Attojoule = 9.999999999e-19 Joule
1 Attojoule = 1e-21 KiloJoule
1 Attojoule = 9.999999999e-28 GigaJoule
1 Attojoule = 1e-24 MegaJoule
1 Attojoule = 9.999999999e-16 Millijoule
1 Attojoule = 1e-12 Microjoule
1 Attojoule = 9.999999999e-10 Nanojoule
1 Attojoule = 1 Attojoule
1 Attojoule = 2.777777777e-25 Kilowatt-hour
1 Attojoule = 2.777777777e-22 Watt-hour
1 Attojoule = 2.777777777e-31 Gigawatt-hour
1 Attojoule = 2.777777777e-28 Megawatt-hour
1 Attojoule = 1e-21 Kilowatt-second
1 Attojoule = 9.999999999e-19 watt-second
1 Attojoule = 2.388459e-22 Calorie (nutritional)
1 Attojoule = 2.388459e-19 Calorie (IT)
1 Attojoule = 2.390057e-19 Calorie (th)
1 Attojoule = 2.388459e-22 Kilocalorie (IT)
1 Attojoule = 2.390057e-22 Kilocalorie (th)
1 Attojoule = 9.478171e-22 British Thermal Unit (IT)
1 Attojoule = 9.484517e-22 British Thermal Unit (th)
1 Attojoule = 9.478171203e-28 Mega British Thermal Unit (IT)
1 Attojoule = 0.0000062415 Megaelectron-volt
1 Attojoule = 0.0062415091 Kiloelectron volt
1 Attojoule = 6.2415090745 Electron volt
1 Attojoule = 9.999999999e-12 erg
1 Attojoule = 9.999999999e-19 Newton Meter
1 Attojoule = 3.725061361e-25 Horsepower hour
1 Attojoule = 7.898476002e-26 Ton-hour (refrigeration)
1 Attojoule = 2.487708977e-29 Fuel oil equivalent @kiloliter
1 Attojoule = 1.566639868e-28 Fuel oil equivalent @barrel
1 Attojoule = 2.390057361e-37 Gigaton
1 Attojoule = 2.390057361e-34 Megaton
1 Attojoule = 2.390057361e-31 Kiloton
1 Attojoule = 2.390057361e-28 Ton (TNT)
1 Attojoule = 9.999999999e-12 dyne centimeter
1 Attojoule = 1.019716213e-16 Gram-force meter
1 Attojoule = 1.019716213e-14 Gram-force centimeter
1 Attojoule = 1.019716213e-17 Kilogram-force centimeter
1 Attojoule = 1.019716213e-19 Kilogram-force meter
1 Attojoule = 1.019716213e-19 Kilopond meter
1 Attojoule = 7.375621492e-19 Pound-force foot
1 Attojoule = 8.850745791e-18 Pound-force inch
1 Attojoule = 1.416119326e-16 Ounce-force inch
1 Attojoule = 7.375621492e-19 Foot-pound
1 Attojoule = 8.850745791e-18 Inch-pound
1 Attojoule = 1.416119326e-16 Inch-ounce
1 Attojoule = 2.373036045e-17 Poundal foot
1 Attojoule = 9.478169879e-27 Therm
1 Attojoule = 9.478169879e-27 Therm (EC)
1 Attojoule = 9.480434279e-27 Therm (US)
1 Attojoule = 0.2293710449 Hartree energy
1 Attojoule = 0.4587420897 Rydberg constant