What is 1 Electronvolt in Kilocalorie (food calorie)?

1 Electronvolt = 0 Kilocalorie (food calorie) (eV → kcal).

What is the formula to convert Electronvolt to Kilocalorie (food calorie)?

kcal = eV × 3.829294e-23 Example: 1 eV = 3.829294e-23 kcal.

Yes — the factor is exact by international definition (NIST SP 811 / BIPM SI brochure).

Convert electronvolt to kilocalorie (food calorie) instantly. The conversion factor below is exact by international definition.

Realtime·energy·SI

Exact

From

× 0

Result

kcal

Precision [auto]

kcal = eV × 3.829294e-23

Inverse: eV = kcal × 2.611447e+22

Worked example: 1 eV = 3.829294e-23 kcal

Electronvolt (eV)

Source: NIST 2019 SI redefinition.

Kilocalorie (food calorie) (kcal)

Nutrition labels in the US and worldwide as "Calorie".

Electronvolt (eV)	Kilocalorie (food calorie) (kcal)
1	0
2	0
5	0
10	0
15	0
20	0
25	0
50	0
100	0
250	0
500	0
750	0
1,000	0

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