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Electronvolts to Kiloelectronvolts Converter

Convert electronvolts (eV) to kiloelectronvolts (keV), 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.

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
0.001 keV
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
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
megaelectronvolts
1 × 10⁻⁶ MeV

1 eV = 0.001 keV

Show the working
  1. 1 eV = 0.001 keV
  2. 1 × 0.001 = 0.001 keV

How to convert electronvolts to kiloelectronvolts

1 eV = 0.001 keV, so multiply by 0.001 to go from electronvolts to kiloelectronvolts. Going the other way, 1 keV = 1,000 eV.

keV = eV × 0.001
eV = keV × 1,000

Worked example:

1 eV = 0.001 keV
5 × 0.001 = 0.005 keV

Electronvolts to kiloelectronvolts table

ElectronvoltsKiloelectronvolts
1 eV0.001 keV
2 eV0.002 keV
3 eV0.003 keV
4 eV0.004 keV
5 eV0.005 keV
6 eV0.006 keV
7 eV0.007 keV
8 eV0.008 keV
9 eV0.009 keV
10 eV0.01 keV
15 eV0.015 keV
20 eV0.02 keV
25 eV0.025 keV
30 eV0.03 keV
40 eV0.04 keV
50 eV0.05 keV
75 eV0.075 keV
100 eV0.1 keV
250 eV0.25 keV
500 eV0.5 keV
1000 eV1 keV

About the units

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

Formula version 0.1.0Reviewed