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Electronvolts to Kilowatt-hours Converter

Convert electronvolts (eV) to kilowatt-hours (kWh), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter an amount of energy, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

A number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
The unit you want the answer in. Swap exchanges the two units.
Result
4.45049065 × 10⁻²⁶ kWh
joules (watt-seconds)
1.602176634 × 10⁻¹⁹ J
kilojoules
1.602176634 × 10⁻²² kJ
megajoules
1.602176634 × 10⁻²⁵ MJ
gigajoules
1.602176634 × 10⁻²⁸ GJ
calories (thermochemical)
3.82929405832 × 10⁻²⁰ cal
kilocalories (food Calories)
3.82929405832 × 10⁻²³ kcal
megacalories
3.82929405832 × 10⁻²⁶ Mcal
watt-hours
4.45049065 × 10⁻²³ Wh
megawatt-hours
4.45049065 × 10⁻²⁹ MWh
British thermal units (IT)
1.51857044347 × 10⁻²² Btu
million Btu
1.51857044347 × 10⁻²⁸ MMBtu
therms (100,000 Btu)
1.51857044347 × 10⁻²⁷ thm
quads (10¹⁵ Btu)
1.51857044347 × 10⁻³⁷ quad
kiloelectronvolts
0.001 keV
megaelectronvolts
1 × 10⁻⁶ MeV

1 eV = 4.45049065 × 10⁻²⁶ kWh

Show the working
  1. 1 eV = 4.45049065e-26 kWh
  2. 1 × 4.45049065e-26 = 4.45049065e-26 kWh

How to convert electronvolts to kilowatt-hours

1 eV = 4.45049065 × 10⁻²⁶ kWh, so multiply by 4.45049065 to go from electronvolts to kilowatt-hours. Going the other way, 1 kWh = 2.24694326681 × 10²⁵ eV.

kWh = eV × 4.45049065
eV = kWh × 2.24694326681

Worked example:

1 eV = 4.45049065e-26 kWh
5 × 4.45049065e-26 = 2.225245325e-25 kWh

Electronvolts to kilowatt-hours table

ElectronvoltsKilowatt-hours
1 eV4.45049065 × 10⁻²⁶ kWh
2 eV8.9009813 × 10⁻²⁶ kWh
3 eV1.335147195 × 10⁻²⁵ kWh
4 eV1.78019626 × 10⁻²⁵ kWh
5 eV2.225245325 × 10⁻²⁵ kWh
6 eV2.67029439 × 10⁻²⁵ kWh
7 eV3.115343455 × 10⁻²⁵ kWh
8 eV3.56039252 × 10⁻²⁵ kWh
9 eV4.005441585 × 10⁻²⁵ kWh
10 eV4.45049065 × 10⁻²⁵ kWh
15 eV6.675735975 × 10⁻²⁵ kWh
20 eV8.9009813 × 10⁻²⁵ kWh
25 eV1.1126226625 × 10⁻²⁴ kWh
30 eV1.335147195 × 10⁻²⁴ kWh
40 eV1.78019626 × 10⁻²⁴ kWh
50 eV2.225245325 × 10⁻²⁴ kWh
75 eV3.3378679875 × 10⁻²⁴ kWh
100 eV4.45049065 × 10⁻²⁴ kWh
250 eV1.1126226625 × 10⁻²³ kWh
500 eV2.225245325 × 10⁻²³ kWh
1000 eV4.45049065 × 10⁻²³ kWh

About the units

Electronvolts (eV)
Electronvolts, a specialised unit. Definition: NIST CODATA: elementary charge (exact since the 2019 SI redefinition).
Kilowatt-hours (kWh)
Kilowatt-hours, a metric unit. Definition: BIPM SI Brochure, 9th edition (SI units, prefixes and units accepted for use with the SI).

Formula version 0.1.0Reviewed