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Megaelectronvolts to Kiloelectronvolts Converter

Convert megaelectronvolts (MeV) 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
1,000 keV
joules (watt-seconds)
1.602176634 × 10⁻¹³ J
kilojoules
1.602176634 × 10⁻¹⁶ kJ
megajoules
1.602176634 × 10⁻¹⁹ MJ
gigajoules
1.602176634 × 10⁻²² GJ
calories (thermochemical)
3.82929405832 × 10⁻¹⁴ cal
kilocalories (food Calories)
3.82929405832 × 10⁻¹⁷ kcal
megacalories
3.82929405832 × 10⁻²⁰ Mcal
watt-hours
4.45049065 × 10⁻¹⁷ Wh
kilowatt-hours
4.45049065 × 10⁻²⁰ kWh
megawatt-hours
4.45049065 × 10⁻²³ MWh
British thermal units (IT)
1.51857044347 × 10⁻¹⁶ Btu
million Btu
1.51857044347 × 10⁻²² MMBtu
therms (100,000 Btu)
1.51857044347 × 10⁻²¹ thm
quads (10¹⁵ Btu)
1.51857044347 × 10⁻³¹ quad
electronvolts
1,000,000 eV

1 MeV = 1,000 keV

Show the working
  1. 1 MeV = 1000 keV
  2. 1 × 1000 = 1000 keV

How to convert megaelectronvolts to kiloelectronvolts

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

keV = MeV × 1,000
MeV = keV × 0.001

Worked example:

1 MeV = 1000 keV
5 × 1000 = 5000 keV

Megaelectronvolts to kiloelectronvolts table

MegaelectronvoltsKiloelectronvolts
1 MeV1,000 keV
2 MeV2,000 keV
3 MeV3,000 keV
4 MeV4,000 keV
5 MeV5,000 keV
6 MeV6,000 keV
7 MeV7,000 keV
8 MeV8,000 keV
9 MeV9,000 keV
10 MeV10,000 keV
15 MeV15,000 keV
20 MeV20,000 keV
25 MeV25,000 keV
30 MeV30,000 keV
40 MeV40,000 keV
50 MeV50,000 keV
75 MeV75,000 keV
100 MeV100,000 keV
250 MeV250,000 keV
500 MeV500,000 keV
1000 MeV1,000,000 keV

About the units

Megaelectronvolts (MeV)
Megaelectronvolts, 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