Hartree to Kilowatt-Hour Converter
Convert Hartree (Eh) to Kilowatt-Hour (kWh) instantly. 1 Eh = 1.211040e-24 kWh.
Energy Converter
27 units available
1 Eh = 1.211040e-24 kWh
Formula:
kWh = Eh × 1.211040e-24With your value: 1 Eh = 1.211040e-24 kWh
How big is that?
Everyday references on a logarithmic scale, all expressed in hartree so you can sanity-check the result.
Other Hartree to Kilowatt-Hour conversions
Hartree to Kilowatt-Hour Conversion Table
| Hartree (Eh) | Kilowatt-Hour (kWh) |
|---|---|
| 0.5 | 6.055201e-25 |
| 1 | 1.211040e-24 |
| 2 | 2.422080e-24 |
| 5 | 6.055201e-24 |
| 10 | 1.211040e-23 |
| 15 | 1.816560e-23 |
| 20 | 2.422080e-23 |
| 25 | 3.027601e-23 |
| 50 | 6.055201e-23 |
| 100 | 1.211040e-22 |
| 250 | 3.027601e-22 |
| 500 | 6.055201e-22 |
| 1000 | 1.211040e-21 |
Kilowatt-Hour to Hartree Conversion Table
| Kilowatt-Hour (kWh) | Hartree (Eh) |
|---|---|
| 0.5 | 4.128682e+23 |
| 1 | 8.257364e+23 |
| 2 | 1.651473e+24 |
| 5 | 4.128682e+24 |
| 10 | 8.257364e+24 |
| 15 | 1.238605e+25 |
| 20 | 1.651473e+25 |
| 25 | 2.064341e+25 |
| 50 | 4.128682e+25 |
| 100 | 8.257364e+25 |
| 250 | 2.064341e+26 |
| 500 | 4.128682e+26 |
| 1000 | 8.257364e+26 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Hartree (Eh)
Energy
Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Kilowatt-Hour (kWh)
Energy
Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Hartree to Kilowatt-Hour
To convert from Hartree (Eh) to Kilowatt-Hour (kWh), multiply the value by 1.211040e-24.
Formula: kWh = Eh × 1.211040e-24
Reverse: Eh = kWh × 8.257364e+23
Step-by-Step Example
- Start with your value in Hartree. For example: 5 Eh
- Multiply by the conversion factor: 5 x 1.211040e-24
- The result is: 6.055201e-24 kWh
About Hartree
The hartree (Eh) is a unit of energy and work. One hartree equals 4.359745 × 10^-18 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: energy calculations, engineering and science, education.
About Kilowatt-Hour
The kilowatt-hour is a unit of energy equal to 3.6 million joules, commonly used for electrical billing.
Common uses: electricity bills, energy consumption, appliances.
Frequently Asked Questions
How many Kilowatt-Hour are in 1 Hartree?
There are exactly 1.211040e-24 Kilowatt-Hour in 1 Hartree. This means the conversion factor from Hartree to Kilowatt-Hour is 1.211040e-24.
What is the formula to convert Hartree to Kilowatt-Hour?
The formula to convert Hartree to Kilowatt-Hour is: kWh = Eh × 1.211040e-24. For example, to convert 10 Hartree to Kilowatt-Hour, you would multiply 10 by 1.211040e-24.
What is a Hartree?
The hartree (Eh) is a unit of energy and work. One hartree equals 4.359745 × 10^-18 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What is a Kilowatt-Hour?
The kilowatt-hour is a unit of energy equal to 3.6 million joules, commonly used for electrical billing.
What are the common uses of Hartree?
The Hartree is commonly used in energy calculations, engineering and science, education.
Related Energy Conversions
Cite this page
UnitConvertLab. (2026). Hartree to Kilowatt-Hour converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/hartree-to-kilowatt_hour