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Kiloelectronvolts to Megacalories Converter

Convert kiloelectronvolts (keV) to megacalories (Mcal), 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
3.82929405832 × 10⁻²³ Mcal
joules (watt-seconds)
1.602176634 × 10⁻¹⁶ J
kilojoules
1.602176634 × 10⁻¹⁹ kJ
megajoules
1.602176634 × 10⁻²² MJ
gigajoules
1.602176634 × 10⁻²⁵ GJ
calories (thermochemical)
3.82929405832 × 10⁻¹⁷ cal
kilocalories (food Calories)
3.82929405832 × 10⁻²⁰ kcal
watt-hours
4.45049065 × 10⁻²⁰ Wh
kilowatt-hours
4.45049065 × 10⁻²³ kWh
megawatt-hours
4.45049065 × 10⁻²⁶ MWh
British thermal units (IT)
1.51857044347 × 10⁻¹⁹ Btu
million Btu
1.51857044347 × 10⁻²⁵ MMBtu
therms (100,000 Btu)
1.51857044347 × 10⁻²⁴ thm
quads (10¹⁵ Btu)
1.51857044347 × 10⁻³⁴ quad
electronvolts
1,000 eV
megaelectronvolts
0.001 MeV

1 keV = 3.82929405832 × 10⁻²³ Mcal

Show the working
  1. 1 keV = 3.82929405832e-23 Mcal
  2. 1 × 3.82929405832e-23 = 3.82929405832e-23 Mcal

How to convert kiloelectronvolts to megacalories

1 keV = 3.82929405832 × 10⁻²³ Mcal, so multiply by 3.82929405832 to go from kiloelectronvolts to megacalories. Going the other way, 1 Mcal = 2.61144739675 × 10²² keV.

Mcal = keV × 3.82929405832
keV = Mcal × 2.61144739675

Worked example:

1 keV = 3.82929405832e-23 Mcal
5 × 3.82929405832e-23 = 1.91464702916e-22 Mcal

Kiloelectronvolts to megacalories table

KiloelectronvoltsMegacalories
1 keV3.82929405832 × 10⁻²³ Mcal
2 keV7.65858811663 × 10⁻²³ Mcal
3 keV1.1487882175 × 10⁻²² Mcal
4 keV1.53171762333 × 10⁻²² Mcal
5 keV1.91464702916 × 10⁻²² Mcal
6 keV2.29757643499 × 10⁻²² Mcal
7 keV2.68050584082 × 10⁻²² Mcal
8 keV3.06343524665 × 10⁻²² Mcal
9 keV3.44636465249 × 10⁻²² Mcal
10 keV3.82929405832 × 10⁻²² Mcal
15 keV5.74394108748 × 10⁻²² Mcal
20 keV7.65858811663 × 10⁻²² Mcal
25 keV9.57323514579 × 10⁻²² Mcal
30 keV1.1487882175 × 10⁻²¹ Mcal
40 keV1.53171762333 × 10⁻²¹ Mcal
50 keV1.91464702916 × 10⁻²¹ Mcal
75 keV2.87197054374 × 10⁻²¹ Mcal
100 keV3.82929405832 × 10⁻²¹ Mcal
250 keV9.57323514579 × 10⁻²¹ Mcal
500 keV1.91464702916 × 10⁻²⁰ Mcal
1000 keV3.82929405832 × 10⁻²⁰ Mcal

About the units

Kiloelectronvolts (keV)
Kiloelectronvolts, a specialised unit. Definition: NIST CODATA: elementary charge (exact since the 2019 SI redefinition).
Megacalories (Mcal)
Megacalories, a specialised unit. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.

Formula version 0.1.0Reviewed