eV to cal Converter - Electron Volt to Calorie

Electron Volt (eV) to Calorie (cal)

Direct answer

1 eV = 3.82929406e-20 cal

cal = eV × 3.82929406e-20

Converter

Input

Result

3.82929406e-20cal

cal = eV × 3.82929406e-20

eV = cal × 2.6114474e+19

Example: 10 eV = 10 × 3.82929406e-20 = 3.82929406e-19 cal.

Express both eV and cal 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 cal in the base unit
$1 cal = 4.184 J$
3
Forward conversion
$1 eV = \frac{1.60217663 \times 1 0 ^{- 19} J}{4.184 J} \times 1 cal = \frac{1.60217663 \times 1 0 ^{- 19}}{4.184} cal = 3.82929406 \times 1 0^{- 20} cal$
4
Reverse conversion
$1 cal = \frac{4.184 J}{1.60217663 \times 1 0 ^{- 19} J} \times 1 eV = \frac{4.184}{1.60217663 \times 1 0 ^{- 19}} eV = 2.6114474 \times 1 0^{19} eV$

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Guarded output

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1 eV = 3.82929406e-20 cal.

10 eV = 3.82929406e-19 cal.

100 eV = 3.82929406e-18 cal.

Use cal = eV × 3.82929406e-20.

1 cal = 2.6114474e+19 eV.

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