Convert Hartree to Kilocalorie Online

About Hartree to Kilocalorie Conversion

This converter converts Hartree to Kilocalorie (kcal). One Hartree equals 1.0420039967034177e-21 Kilocalorie (kcal).

Formula:

1 Hartree = 1.0420039967034177e-21 Kilocalorie (kcal)

Example:

1  = 1.0420039967034177e-21 kcal
2  = 2.0840079934068354e-21 kcal

Hartree to Kilocalorie (kcal) Conversion

A clear guide to converting Hartree into Kilocalorie. Includes numeric examples, formulas, and a breakdown of where this conversion appears in science, engineering, and daily applications.

Conversion Formula

Kilocalorie = Hartree × 1.042004e-21

To convert Hartree to Kilocalorie (kcal), multiply the value by 1.042004e-21. This factor is obtained by comparing their exact meter definitions.

Worked Example

Convert 1 hartree to kcal.

  • Step 1: Write the formula: kcal = hartree × 1.042004e-21
  • Step 2: Substitute: 1 × 1.042004e-21
  • Step 3: Result: 1.042004e-21 kcal
So, 1 hartree = 1.042004e-21 kcal.

About the Units

Hartree

One Hartree equals 1.042004e-21 Kilocalorie (kcal)

Common in nanotechnology, optical physics, and semiconductor design.

Kilocalorie (kcal)

One Kilocalorie (kcal) equals 9.596892e+20 Hartree

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

Where This Conversion Is Used

  • Converting values from Hartree to Kilocalorie for engineering or scientific workflows.
  • Used when normalizing mixed-unit datasets requiring consistent Kilocalorie 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 Kilocalorie (kcal) are in 1 Hartree?

1 hartree = 1.042004e-21 kcal.

What is the formula for converting Hartree to Kilocalorie (kcal)?

Multiply the hartree value by 1.042004e-21.

Can I reverse the conversion?

Yes. 1 kcal = 9.596892e+20 hartree.

Conclusion

By applying the conversion factor shown above, you can reliably convert Hartree to Kilocalorie (kcal) 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 Kilocalorie to Other Units

Kilocalorie to Joule

1 kcal = 4184 J

1 Kilocalorie (kcal) = 4184 Joules (J)

1 kcal equals 4184 Js.

Kilocalorie to Kilojoule

1 kcal = 4.184 kJ

1 Kilocalorie (kcal) = 4.184 Kilojoules (kJ)

1 kcal equals 4.184 kJs.

Kilocalorie to Megajoule

1 kcal = 0.004184 MJ

1 Kilocalorie (kcal) = 0.004184 Megajoule (MJ)

1 kcal equals 0.004184 MJ.

Kilocalorie to Gigajoule

1 kcal = 0.000004184 GJ

1 Kilocalorie (kcal) = 0.000004184 Gigajoule (GJ)

1 kcal equals 0.000004184 GJ.

Kilocalorie to Watt-hour

1 kcal = 1.1622222222222223 Wh

1 Kilocalorie (kcal) = 1.1622222222222223 Watt-hours (Wh)

1 kcal equals 1.1622222222222223 Whs.

Kilocalorie to Kilowatt-hour

1 kcal = 0.0011622222222222223 kWh

1 Kilocalorie (kcal) = 0.0011622222222222223 Kilowatt-hour (kWh)

1 kcal equals 0.0011622222222222223 kWh.

Kilocalorie to Megawatt-hour

1 kcal = 0.0000011622222222222223 MWh

1 Kilocalorie (kcal) = 0.0000011622222222222223 Megawatt-hour (MWh)

1 kcal equals 0.0000011622222222222223 MWh.

Kilocalorie to Erg

1 kcal = 41840000000 erg

1 Kilocalorie (kcal) = 41840000000 Ergs

1 kcal equals 41840000000 ergs.

Kilocalorie to Calorie

1 kcal = 1000 cal

1 Kilocalorie (kcal) = 1000 Calories (cal)

1 kcal equals 1000 cals.

Kilocalorie to British Thermal Unit

1 kcal = 3.9656512425833603 BTU

1 Kilocalorie (kcal) = 3.9656512425833603 British Thermal Units (BTU)

1 kcal equals 3.9656512425833603 BTUs.

Kilocalorie to Foot-pound force

1 kcal = 3085.9600333303742 ft_lbf

1 Kilocalorie (kcal) = 3085.9600333303742 Foot-pound forces (ft⋅lbf)

1 kcal equals 3085.9600333303742 ft_lbves.

Kilocalorie to Horsepower-hour

1 kcal = 0.0015585671463432713 hp_h

1 Kilocalorie (kcal) = 0.0015585671463432713 Horsepower-hour (hp⋅h)

1 kcal equals 0.0015585671463432713 hp_h.

Kilocalorie to Therm

1 kcal = 0.000039656512425833605 therm_us

1 Kilocalorie (kcal) = 0.000039656512425833605 Therm (US)

1 kcal equals 0.000039656512425833605 therm_us.

Kilocalorie to Electronvolt

1 kcal = 2.6114473967543833e+22 eV

1 Kilocalorie (kcal) = 2.6114473967543833e+22 Electronvolts (eV)

1 kcal equals 2.6114473967543833e+22 eVs.

Kilocalorie to Kiloelectronvolt

1 kcal = 26114473967543833000 keV

1 Kilocalorie (kcal) = 26114473967543833000 Kiloelectronvolts (keV)

1 kcal equals 26114473967543833000 keVs.

Kilocalorie to Megaelectronvolt

1 kcal = 26114473967543828 MeV

1 Kilocalorie (kcal) = 26114473967543828 Megaelectronvolts (MeV)

1 kcal equals 26114473967543828 MeVs.

Kilocalorie to Gigaelectronvolt

1 kcal = 26114473967543.83 GeV

1 Kilocalorie (kcal) = 26114473967543.83 Gigaelectronvolts (GeV)

1 kcal equals 26114473967543.83 GeVs.

Kilocalorie to Tonne of Oil Equivalent

1 kcal = 9.993312314894431e-8 toe

1 Kilocalorie (kcal) = 9.993312314894431e-8 Tonne of Oil Equivalent (toe)

1 kcal equals 9.993312314894431e-8 toe.

Kilocalorie to Tonne of Coal Equivalent

1 kcal = 1.4276160449849187e-7 tce

1 Kilocalorie (kcal) = 1.4276160449849187e-7 Tonne of Coal Equivalent (tce)

1 kcal equals 1.4276160449849187e-7 tce.

Kilocalorie to Hartree

1 kcal = 959689217281022400000 hartree

1 Kilocalorie (kcal) = 959689217281022400000 Hartrees

1 kcal equals 959689217281022400000 hartrees.