Convert Hartree to Kilojoule Online

About Hartree to Kilojoule Conversion

This converter converts Hartree to Kilojoule (kJ). One Hartree equals 4.3597447222071e-21 Kilojoule (kJ).

Formula:

1 Hartree = 4.3597447222071e-21 Kilojoule (kJ)

Example:

1  = 4.3597447222071e-21 kJ
2  = 8.7194894444142e-21 kJ

Hartree to Kilojoule (kJ) Conversion

Convert Hartree to Kilojoule using the exact conversion factor. This page provides the formula, worked examples, and real-world use cases for practical understanding.

Conversion Formula

Kilojoule = Hartree × 4.359745e-21

To convert Hartree to Kilojoule (kJ), multiply the value by 4.359745e-21. This factor is obtained by comparing their exact meter definitions.

Worked Example

Convert 1 hartree to kJ.

  • Step 1: Write the formula: kJ = hartree × 4.359745e-21
  • Step 2: Substitute: 1 × 4.359745e-21
  • Step 3: Result: 4.359745e-21 kJ
So, 1 hartree = 4.359745e-21 kJ.

About the Units

Hartree

One Hartree equals 4.359745e-21 Kilojoule (kJ)

Common in nanotechnology, optical physics, and semiconductor design.

Kilojoule (kJ)

One Kilojoule (kJ) equals 2.293712e+20 Hartree

A widely used unit across scientific, engineering, and measurement contexts.

Where This Conversion Is Used

  • Converting values from Hartree to Kilojoule for engineering or scientific workflows.
  • Used when normalizing mixed-unit datasets requiring consistent Kilojoule representation.
  • Applied when comparing different measurement systems across tools and documents.
  • Used in nanotechnology, material science, and quantum-level research.

Frequently Asked Questions

How many Kilojoule (kJ) are in 1 Hartree?

1 hartree = 4.359745e-21 kJ.

What is the formula for converting Hartree to Kilojoule (kJ)?

Multiply the hartree value by 4.359745e-21.

Can I reverse the conversion?

Yes. 1 kJ = 2.293712e+20 hartree.

Conclusion

By applying the conversion factor shown above, you can reliably convert Hartree to Kilojoule (kJ) for use in scientific analysis, engineering calculations, academic work, or daily measurements.

Quick Links for Unit Converters

Convert Hartree to Other Units

Hartree to Joule

1 hartree = 4.3597447222071e-18 J

1 Hartree = 4.3597447222071e-18 Joule (J)

1 hartree equals 4.3597447222071e-18 J.

Hartree to Kilojoule

1 hartree = 4.3597447222071e-21 kJ

1 Hartree = 4.3597447222071e-21 Kilojoule (kJ)

1 hartree equals 4.3597447222071e-21 kJ.

Hartree to Megajoule

1 hartree = 4.3597447222071e-24 MJ

1 Hartree = 4.3597447222071e-24 Megajoule (MJ)

1 hartree equals 4.3597447222071e-24 MJ.

Hartree to Gigajoule

1 hartree = 4.3597447222071e-27 GJ

1 Hartree = 4.3597447222071e-27 Gigajoule (GJ)

1 hartree equals 4.3597447222071e-27 GJ.

Hartree to Watt-hour

1 hartree = 1.2110402006130834e-21 Wh

1 Hartree = 1.2110402006130834e-21 Watt-hour (Wh)

1 hartree equals 1.2110402006130834e-21 Wh.

Hartree to Kilowatt-hour

1 hartree = 1.2110402006130833e-24 kWh

1 Hartree = 1.2110402006130833e-24 Kilowatt-hour (kWh)

1 hartree equals 1.2110402006130833e-24 kWh.

Hartree to Megawatt-hour

1 hartree = 1.2110402006130833e-27 MWh

1 Hartree = 1.2110402006130833e-27 Megawatt-hour (MWh)

1 hartree equals 1.2110402006130833e-27 MWh.

Hartree to Erg

1 hartree = 4.3597447222071004e-11 erg

1 Hartree = 4.3597447222071004e-11 Erg

1 hartree equals 4.3597447222071004e-11 erg.

Hartree to Calorie

1 hartree = 1.0420039967034178e-18 cal

1 Hartree = 1.0420039967034178e-18 Calorie (cal)

1 hartree equals 1.0420039967034178e-18 cal.

Hartree to Kilocalorie

1 hartree = 1.0420039967034177e-21 kcal

1 Hartree = 1.0420039967034177e-21 Kilocalorie (kcal)

1 hartree equals 1.0420039967034177e-21 kcal.

Hartree to British Thermal Unit

1 hartree = 4.132224444303736e-21 BTU

1 Hartree = 4.132224444303736e-21 British Thermal Unit (BTU)

1 hartree equals 4.132224444303736e-21 BTU.

Hartree to Foot-pound force

1 hartree = 3.215582688397262e-18 ft_lbf

1 Hartree = 3.215582688397262e-18 Foot-pound force (ft⋅lbf)

1 hartree equals 3.215582688397262e-18 ft_lbf.

Hartree to Horsepower-hour

1 hartree = 1.6240331956203295e-24 hp_h

1 Hartree = 1.6240331956203295e-24 Horsepower-hour (hp⋅h)

1 hartree equals 1.6240331956203295e-24 hp_h.

Hartree to Therm

1 hartree = 4.132224444303736e-26 therm_us

1 Hartree = 4.132224444303736e-26 Therm (US)

1 hartree equals 4.132224444303736e-26 therm_us.

Hartree to Electronvolt

1 hartree = 27.211386245988034 eV

1 Hartree = 27.211386245988034 Electronvolts (eV)

1 hartree equals 27.211386245988034 eVs.

Hartree to Kiloelectronvolt

1 hartree = 0.027211386245988033 keV

1 Hartree = 0.027211386245988033 Kiloelectronvolt (keV)

1 hartree equals 0.027211386245988033 keV.

Hartree to Megaelectronvolt

1 hartree = 0.00002721138624598803 MeV

1 Hartree = 0.00002721138624598803 Megaelectronvolt (MeV)

1 hartree equals 0.00002721138624598803 MeV.

Hartree to Gigaelectronvolt

1 hartree = 2.721138624598803e-8 GeV

1 Hartree = 2.721138624598803e-8 Gigaelectronvolt (GeV)

1 hartree equals 2.721138624598803e-8 GeV.

Hartree to Tonne of Oil Equivalent

1 hartree = 1.041307137242548e-28 toe

1 Hartree = 1.041307137242548e-28 Tonne of Oil Equivalent (toe)

1 hartree equals 1.041307137242548e-28 toe.

Hartree to Tonne of Coal Equivalent

1 hartree = 1.4875816246322115e-28 tce

1 Hartree = 1.4875816246322115e-28 Tonne of Coal Equivalent (tce)

1 hartree equals 1.4875816246322115e-28 tce.

Convert Kilojoule to Other Units

Kilojoule to Joule

1 kJ = 1000 J

1 Kilojoule (kJ) = 1000 Joules (J)

1 kJ equals 1000 Js.

Kilojoule to Megajoule

1 kJ = 0.001 MJ

1 Kilojoule (kJ) = 0.001 Megajoule (MJ)

1 kJ equals 0.001 MJ.

Kilojoule to Gigajoule

1 kJ = 0.000001 GJ

1 Kilojoule (kJ) = 0.000001 Gigajoule (GJ)

1 kJ equals 0.000001 GJ.

Kilojoule to Watt-hour

1 kJ = 0.2777777777777778 Wh

1 Kilojoule (kJ) = 0.2777777777777778 Watt-hour (Wh)

1 kJ equals 0.2777777777777778 Wh.

Kilojoule to Kilowatt-hour

1 kJ = 0.0002777777777777778 kWh

1 Kilojoule (kJ) = 0.0002777777777777778 Kilowatt-hour (kWh)

1 kJ equals 0.0002777777777777778 kWh.

Kilojoule to Megawatt-hour

1 kJ = 2.7777777777777776e-7 MWh

1 Kilojoule (kJ) = 2.7777777777777776e-7 Megawatt-hour (MWh)

1 kJ equals 2.7777777777777776e-7 MWh.

Kilojoule to Erg

1 kJ = 10000000000 erg

1 Kilojoule (kJ) = 10000000000 Ergs

1 kJ equals 10000000000 ergs.

Kilojoule to Calorie

1 kJ = 239.0057361376673 cal

1 Kilojoule (kJ) = 239.0057361376673 Calories (cal)

1 kJ equals 239.0057361376673 cals.

Kilojoule to Kilocalorie

1 kJ = 0.2390057361376673 kcal

1 Kilojoule (kJ) = 0.2390057361376673 Kilocalorie (kcal)

1 kJ equals 0.2390057361376673 kcal.

Kilojoule to British Thermal Unit

1 kJ = 0.9478133944988911 BTU

1 Kilojoule (kJ) = 0.9478133944988911 British Thermal Unit (BTU)

1 kJ equals 0.9478133944988911 BTU.

Kilojoule to Foot-pound force

1 kJ = 737.5621494575464 ft_lbf

1 Kilojoule (kJ) = 737.5621494575464 Foot-pound forces (ft⋅lbf)

1 kJ equals 737.5621494575464 ft_lbves.

Kilojoule to Horsepower-hour

1 kJ = 0.00037250648813175706 hp_h

1 Kilojoule (kJ) = 0.00037250648813175706 Horsepower-hour (hp⋅h)

1 kJ equals 0.00037250648813175706 hp_h.

Kilojoule to Therm

1 kJ = 0.000009478133944988911 therm_us

1 Kilojoule (kJ) = 0.000009478133944988911 Therm (US)

1 kJ equals 0.000009478133944988911 therm_us.

Kilojoule to Electronvolt

1 kJ = 6.241509074460763e+21 eV

1 Kilojoule (kJ) = 6.241509074460763e+21 Electronvolts (eV)

1 kJ equals 6.241509074460763e+21 eVs.

Kilojoule to Kiloelectronvolt

1 kJ = 6241509074460763000 keV

1 Kilojoule (kJ) = 6241509074460763000 Kiloelectronvolts (keV)

1 kJ equals 6241509074460763000 keVs.

Kilojoule to Megaelectronvolt

1 kJ = 6241509074460762 MeV

1 Kilojoule (kJ) = 6241509074460762 Megaelectronvolts (MeV)

1 kJ equals 6241509074460762 MeVs.

Kilojoule to Gigaelectronvolt

1 kJ = 6241509074460.763 GeV

1 Kilojoule (kJ) = 6241509074460.763 Gigaelectronvolts (GeV)

1 kJ equals 6241509074460.763 GeVs.

Kilojoule to Tonne of Oil Equivalent

1 kJ = 2.3884589662749594e-8 toe

1 Kilojoule (kJ) = 2.3884589662749594e-8 Tonne of Oil Equivalent (toe)

1 kJ equals 2.3884589662749594e-8 toe.

Kilojoule to Tonne of Coal Equivalent

1 kJ = 3.4120842375356563e-8 tce

1 Kilojoule (kJ) = 3.4120842375356563e-8 Tonne of Coal Equivalent (tce)

1 kJ equals 3.4120842375356563e-8 tce.

Kilojoule to Hartree

1 kJ = 229371227839632500000 hartree

1 Kilojoule (kJ) = 229371227839632500000 Hartrees

1 kJ equals 229371227839632500000 hartrees.