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Electronvolts to Megacalories Converter

Convert electronvolts (eV) 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 × 10⁻²⁶ Mcal
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
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
kiloelectronvolts
0.001 keV
megaelectronvolts
1 × 10⁻⁶ MeV

1 eV = 3.82929405832 × 10⁻²⁶ Mcal

Show the working
  1. 1 eV = 3.82929405832e-26 Mcal
  2. 1 × 3.82929405832e-26 = 3.82929405832e-26 Mcal

How to convert electronvolts to megacalories

1 eV = 3.82929405832 × 10⁻²⁶ Mcal, so multiply by 3.82929405832 to go from electronvolts to megacalories. Going the other way, 1 Mcal = 2.61144739675 × 10²⁵ eV.

Mcal = eV × 3.82929405832
eV = Mcal × 2.61144739675

Worked example:

1 eV = 3.82929405832e-26 Mcal
5 × 3.82929405832e-26 = 1.91464702916e-25 Mcal

Electronvolts to megacalories table

ElectronvoltsMegacalories
1 eV3.82929405832 × 10⁻²⁶ Mcal
2 eV7.65858811663 × 10⁻²⁶ Mcal
3 eV1.1487882175 × 10⁻²⁵ Mcal
4 eV1.53171762333 × 10⁻²⁵ Mcal
5 eV1.91464702916 × 10⁻²⁵ Mcal
6 eV2.29757643499 × 10⁻²⁵ Mcal
7 eV2.68050584082 × 10⁻²⁵ Mcal
8 eV3.06343524665 × 10⁻²⁵ Mcal
9 eV3.44636465249 × 10⁻²⁵ Mcal
10 eV3.82929405832 × 10⁻²⁵ Mcal
15 eV5.74394108748 × 10⁻²⁵ Mcal
20 eV7.65858811663 × 10⁻²⁵ Mcal
25 eV9.57323514579 × 10⁻²⁵ Mcal
30 eV1.1487882175 × 10⁻²⁴ Mcal
40 eV1.53171762333 × 10⁻²⁴ Mcal
50 eV1.91464702916 × 10⁻²⁴ Mcal
75 eV2.87197054374 × 10⁻²⁴ Mcal
100 eV3.82929405832 × 10⁻²⁴ Mcal
250 eV9.57323514579 × 10⁻²⁴ Mcal
500 eV1.91464702916 × 10⁻²³ Mcal
1000 eV3.82929405832 × 10⁻²³ Mcal

About the units

Electronvolts (eV)
Electronvolts, 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