Convert Joule to Kilowatt-hour Online

About Joule to Kilowatt-hour Conversion

This converter converts Joule (J) to Kilowatt-hour (kWh). One Joule (J) equals 2.7777777777777776e-7 Kilowatt-hour (kWh).

Formula:

1 Joule (J) = 2.7777777777777776e-7 Kilowatt-hour (kWh)

Example:

1 J = 2.7777777777777776e-7 kWh
2 J = 5.555555555555555e-7 kWh

Joule (J) to Kilowatt-hour (kWh) Conversion

Joule to Kilowatt-hour conversion explained with exact factors, step-by-step examples, and situations where this conversion is commonly used.

Conversion Formula

Kilowatt-hour = Joule × 2.777778e-7

To convert Joule (J) to Kilowatt-hour (kWh), multiply the value by 2.777778e-7. This factor is obtained by comparing their exact meter definitions.

Worked Example

Convert 1 J to kWh.

  • Step 1: Write the formula: kWh = J × 2.777778e-7
  • Step 2: Substitute: 1 × 2.777778e-7
  • Step 3: Result: 2.777778e-7 kWh
So, 1 J = 2.777778e-7 kWh.

About the Units

Joule (J)

One Joule (J) equals 2.777778e-7 Kilowatt-hour (kWh)

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

Kilowatt-hour (kWh)

One Kilowatt-hour (kWh) equals 3.600000e+6 Joule (J)

Used for extremely large distances such as astronomical or planetary scales.

Where This Conversion Is Used

  • Converting values from Joule to Kilowatt-hour for engineering or scientific workflows.
  • Used when normalizing mixed-unit datasets requiring consistent Kilowatt-hour representation.
  • Applied when comparing different measurement systems across tools and documents.
  • Essential in astronomy, orbital mechanics, and large-scale simulations.

Frequently Asked Questions

How many Kilowatt-hour (kWh) are in 1 Joule (J)?

1 J = 2.777778e-7 kWh.

What is the formula for converting Joule (J) to Kilowatt-hour (kWh)?

Multiply the J value by 2.777778e-7.

Can I reverse the conversion?

Yes. 1 kWh = 3.600000e+6 J.

Conclusion

By applying the conversion factor shown above, you can reliably convert Joule (J) to Kilowatt-hour (kWh) for use in scientific analysis, engineering calculations, academic work, or daily measurements.

Quick Links for Unit Converters

Convert Joule to Other Units

Joule to Kilojoule

1 J = 0.001 kJ

1 Joule (J) = 0.001 Kilojoule (kJ)

1 J equals 0.001 kJ.

Joule to Megajoule

1 J = 0.000001 MJ

1 Joule (J) = 0.000001 Megajoule (MJ)

1 J equals 0.000001 MJ.

Joule to Gigajoule

1 J = 1e-9 GJ

1 Joule (J) = 1e-9 Gigajoule (GJ)

1 J equals 1e-9 GJ.

Joule to Watt-hour

1 J = 0.0002777777777777778 Wh

1 Joule (J) = 0.0002777777777777778 Watt-hour (Wh)

1 J equals 0.0002777777777777778 Wh.

Joule to Kilowatt-hour

1 J = 2.7777777777777776e-7 kWh

1 Joule (J) = 2.7777777777777776e-7 Kilowatt-hour (kWh)

1 J equals 2.7777777777777776e-7 kWh.

Joule to Megawatt-hour

1 J = 2.7777777777777777e-10 MWh

1 Joule (J) = 2.7777777777777777e-10 Megawatt-hour (MWh)

1 J equals 2.7777777777777777e-10 MWh.

Joule to Erg

1 J = 10000000 erg

1 Joule (J) = 10000000 Ergs

1 J equals 10000000 ergs.

Joule to Calorie

1 J = 0.2390057361376673 cal

1 Joule (J) = 0.2390057361376673 Calorie (cal)

1 J equals 0.2390057361376673 cal.

Joule to Kilocalorie

1 J = 0.0002390057361376673 kcal

1 Joule (J) = 0.0002390057361376673 Kilocalorie (kcal)

1 J equals 0.0002390057361376673 kcal.

Joule to British Thermal Unit

1 J = 0.0009478133944988911 BTU

1 Joule (J) = 0.0009478133944988911 British Thermal Unit (BTU)

1 J equals 0.0009478133944988911 BTU.

Joule to Foot-pound force

1 J = 0.7375621494575464 ft_lbf

1 Joule (J) = 0.7375621494575464 Foot-pound force (ft⋅lbf)

1 J equals 0.7375621494575464 ft_lbf.

Joule to Horsepower-hour

1 J = 3.7250648813175704e-7 hp_h

1 Joule (J) = 3.7250648813175704e-7 Horsepower-hour (hp⋅h)

1 J equals 3.7250648813175704e-7 hp_h.

Joule to Therm

1 J = 9.478133944988911e-9 therm_us

1 Joule (J) = 9.478133944988911e-9 Therm (US)

1 J equals 9.478133944988911e-9 therm_us.

Joule to Electronvolt

1 J = 6241509074460763000 eV

1 Joule (J) = 6241509074460763000 Electronvolts (eV)

1 J equals 6241509074460763000 eVs.

Joule to Kiloelectronvolt

1 J = 6241509074460763 keV

1 Joule (J) = 6241509074460763 Kiloelectronvolts (keV)

1 J equals 6241509074460763 keVs.

Joule to Megaelectronvolt

1 J = 6241509074460.763 MeV

1 Joule (J) = 6241509074460.763 Megaelectronvolts (MeV)

1 J equals 6241509074460.763 MeVs.

Joule to Gigaelectronvolt

1 J = 6241509074.460762 GeV

1 Joule (J) = 6241509074.460762 Gigaelectronvolts (GeV)

1 J equals 6241509074.460762 GeVs.

Joule to Tonne of Oil Equivalent

1 J = 2.3884589662749594e-11 toe

1 Joule (J) = 2.3884589662749594e-11 Tonne of Oil Equivalent (toe)

1 J equals 2.3884589662749594e-11 toe.

Joule to Tonne of Coal Equivalent

1 J = 3.412084237535656e-11 tce

1 Joule (J) = 3.412084237535656e-11 Tonne of Coal Equivalent (tce)

1 J equals 3.412084237535656e-11 tce.

Joule to Hartree

1 J = 229371227839632480 hartree

1 Joule (J) = 229371227839632480 Hartrees

1 J equals 229371227839632480 hartrees.

Convert Kilowatt-hour to Other Units

Kilowatt-hour to Joule

1 kWh = 3600000 J

1 Kilowatt-hour (kWh) = 3600000 Joules (J)

1 kWh equals 3600000 Js.

Kilowatt-hour to Kilojoule

1 kWh = 3600 kJ

1 Kilowatt-hour (kWh) = 3600 Kilojoules (kJ)

1 kWh equals 3600 kJs.

Kilowatt-hour to Megajoule

1 kWh = 3.6 MJ

1 Kilowatt-hour (kWh) = 3.6 Megajoules (MJ)

1 kWh equals 3.6 MJs.

Kilowatt-hour to Gigajoule

1 kWh = 0.0036 GJ

1 Kilowatt-hour (kWh) = 0.0036 Gigajoule (GJ)

1 kWh equals 0.0036 GJ.

Kilowatt-hour to Watt-hour

1 kWh = 1000 Wh

1 Kilowatt-hour (kWh) = 1000 Watt-hours (Wh)

1 kWh equals 1000 Whs.

Kilowatt-hour to Megawatt-hour

1 kWh = 0.001 MWh

1 Kilowatt-hour (kWh) = 0.001 Megawatt-hour (MWh)

1 kWh equals 0.001 MWh.

Kilowatt-hour to Erg

1 kWh = 36000000000000 erg

1 Kilowatt-hour (kWh) = 36000000000000 Ergs

1 kWh equals 36000000000000 ergs.

Kilowatt-hour to Calorie

1 kWh = 860420.6500956023 cal

1 Kilowatt-hour (kWh) = 860420.6500956023 Calories (cal)

1 kWh equals 860420.6500956023 cals.

Kilowatt-hour to Kilocalorie

1 kWh = 860.4206500956022 kcal

1 Kilowatt-hour (kWh) = 860.4206500956022 Kilocalories (kcal)

1 kWh equals 860.4206500956022 kcals.

Kilowatt-hour to British Thermal Unit

1 kWh = 3412.128220196008 BTU

1 Kilowatt-hour (kWh) = 3412.128220196008 British Thermal Units (BTU)

1 kWh equals 3412.128220196008 BTUs.

Kilowatt-hour to Foot-pound force

1 kWh = 2655223.738047167 ft_lbf

1 Kilowatt-hour (kWh) = 2655223.738047167 Foot-pound forces (ft⋅lbf)

1 kWh equals 2655223.738047167 ft_lbves.

Kilowatt-hour to Horsepower-hour

1 kWh = 1.3410233572743253 hp_h

1 Kilowatt-hour (kWh) = 1.3410233572743253 Horsepower-hours (hp⋅h)

1 kWh equals 1.3410233572743253 hp_hs.

Kilowatt-hour to Therm

1 kWh = 0.034121282201960076 therm_us

1 Kilowatt-hour (kWh) = 0.034121282201960076 Therm (US)

1 kWh equals 0.034121282201960076 therm_us.

Kilowatt-hour to Electronvolt

1 kWh = 2.2469432668058746e+25 eV

1 Kilowatt-hour (kWh) = 2.2469432668058746e+25 Electronvolts (eV)

1 kWh equals 2.2469432668058746e+25 eVs.

Kilowatt-hour to Kiloelectronvolt

1 kWh = 2.2469432668058747e+22 keV

1 Kilowatt-hour (kWh) = 2.2469432668058747e+22 Kiloelectronvolts (keV)

1 kWh equals 2.2469432668058747e+22 keVs.

Kilowatt-hour to Megaelectronvolt

1 kWh = 22469432668058743000 MeV

1 Kilowatt-hour (kWh) = 22469432668058743000 Megaelectronvolts (MeV)

1 kWh equals 22469432668058743000 MeVs.

Kilowatt-hour to Gigaelectronvolt

1 kWh = 22469432668058744 GeV

1 Kilowatt-hour (kWh) = 22469432668058744 Gigaelectronvolts (GeV)

1 kWh equals 22469432668058744 GeVs.

Kilowatt-hour to Tonne of Oil Equivalent

1 kWh = 0.00008598452278589854 toe

1 Kilowatt-hour (kWh) = 0.00008598452278589854 Tonne of Oil Equivalent (toe)

1 kWh equals 0.00008598452278589854 toe.

Kilowatt-hour to Tonne of Coal Equivalent

1 kWh = 0.00012283503255128362 tce

1 Kilowatt-hour (kWh) = 0.00012283503255128362 Tonne of Coal Equivalent (tce)

1 kWh equals 0.00012283503255128362 tce.

Kilowatt-hour to Hartree

1 kWh = 8.25736420222677e+23 hartree

1 Kilowatt-hour (kWh) = 8.25736420222677e+23 Hartrees

1 kWh equals 8.25736420222677e+23 hartrees.