eV to kcal Converter - Electron Volt to Kilocalorie

Electron Volt (eV) to Kilocalorie (kcal)

Direct answer

1 eV = 3.82929406e-23 kcal

kcal = eV × 3.82929406e-23

Converter

Input

Result

3.82929406e-23kcal

kcal = eV × 3.82929406e-23

eV = kcal × 2.6114474e+22

Example: 10 eV = 10 × 3.82929406e-23 = 3.82929406e-22 kcal.

Express both eV and kcal in the same base unit J (joule), then cancel the shared base unit.

1
Rewrite eV in the base unit
$1 eV = 1.60217663 \times 1 0^{- 19} J$
2
Rewrite kcal in the base unit
$1 kcal = 4, 184 J$
3
Forward conversion
$1 eV = \frac{1.60217663 \times 1 0 ^{- 19} J}{4 , 184 J} \times 1 kcal = \frac{1.60217663 \times 1 0 ^{- 19}}{4 , 184} kcal = 3.82929406 \times 1 0^{- 23} kcal$
4
Reverse conversion
$1 kcal = \frac{4 , 184 J}{1.60217663 \times 1 0 ^{- 19} J} \times 1 eV = \frac{4 , 184}{1.60217663 \times 1 0 ^{- 19}} eV = 2.6114474 \times 1 0^{22} eV$

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Guarded output

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1 eV = 3.82929406e-23 kcal.

10 eV = 3.82929406e-22 kcal.

100 eV = 3.82929406e-21 kcal.

Use kcal = eV × 3.82929406e-23.

1 kcal = 2.6114474e+22 eV.

Use the conversion factor and round the result to the precision required by your calculation.