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Electronvolts Converter

Convert electronvolts (eV) to other units, with every conversion from 1 eV listed.

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.

About valueA number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
About toThe unit you want the answer in. Swap exchanges the two units.
Result
Result
1.51857044347 × 10⁻²² Btu
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
kilowatt-hours
4.45049065 × 10⁻²⁶ kWh
megawatt-hours
4.45049065 × 10⁻²⁹ MWh
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 = 1.51857044347 × 10⁻²² Btu

Show the working
  1. 1 eV = 1.51857044347e-22 Btu
  2. 1 × 1.51857044347e-22 = 1.51857044347e-22 Btu

1 eV in other units

Conversion1 eV equals
Electronvolts to british thermal units1.51857044347 × 10⁻²² Btu
Electronvolts to calories3.82929405832 × 10⁻²⁰ cal
Electronvolts to gigajoules1.602176634 × 10⁻²⁸ GJ
Electronvolts to joules1.602176634 × 10⁻¹⁹ J
Electronvolts to kilocalories3.82929405832 × 10⁻²³ kcal
Electronvolts to kiloelectronvolts0.001 keV
Electronvolts to kilojoules1.602176634 × 10⁻²² kJ
Electronvolts to kilowatt-hours4.45049065 × 10⁻²⁶ kWh
Electronvolts to megacalories3.82929405832 × 10⁻²⁶ Mcal
Electronvolts to megaelectronvolts1 × 10⁻⁶ MeV
Electronvolts to megajoules1.602176634 × 10⁻²⁵ MJ
Electronvolts to megawatt-hours4.45049065 × 10⁻²⁹ MWh
Electronvolts to million btu1.51857044347 × 10⁻²⁸ MMBtu
Electronvolts to quads1.51857044347 × 10⁻³⁷ quad
Electronvolts to therms1.51857044347 × 10⁻²⁷ thm
Electronvolts to watt-hours4.45049065 × 10⁻²³ Wh

About the units

Electronvolts (eV)
Electronvolts, a specialised unit. Definition: NIST CODATA: elementary charge (exact since the 2019 SI redefinition).

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