Electron Volt to Calorie (th) Converter

Energy Converter

27 units available

Decimals:

From

To

3.829294e-20

1 eV = 3.829294e-20 cal

Formula:

cal = eV × 3.829294e-20

With your value: 1 eV = 3.829294e-20 cal

How big is that?

Everyday references on a logarithmic scale, all expressed in electron volt so you can sanity-check the result.

Your value1.00 eV

Heartbeat (6.2e+18× your value)6.24e+18 eV

AA battery charge (6.2e+22× your value)6.24e+22 eV

Slice of bread (1.7e+24× your value)1.75e+24 eV

Daily food intake (5.2e+25× your value)5.24e+25 eV

Litre of petrol (2.1e+26× your value)2.13e+26 eV

Other Electron Volt to Calorie (th) conversions

2 eV to cal 3 eV to cal 4 eV to cal 5 eV to cal 6 eV to cal 7 eV to cal 8 eV to cal

Electron Volt to Calorie (th) Conversion Table

Electron Volt (eV)	Calorie (th) (cal)
0.5	1.914647e-20
1	3.829294e-20
2	7.658588e-20
5	1.914647e-19
10	3.829294e-19
15	5.743941e-19
20	7.658588e-19
25	9.573235e-19
50	1.914647e-18
100	3.829294e-18
250	9.573235e-18
500	1.914647e-17
1000	3.829294e-17

Calorie (th) to Electron Volt Conversion Table

Calorie (th) (cal)	Electron Volt (eV)
0.5	1.305724e+19
1	2.611447e+19
2	5.222895e+19
5	1.305724e+20
10	2.611447e+20
15	3.917171e+20
20	5.222895e+20
25	6.528618e+20
50	1.305724e+21
100	2.611447e+21
250	6.528618e+21
500	1.305724e+22
1000	2.611447e+22

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Electron Volt (eV)

Energy

Exact conversion

1 eV = 1.602 176 634 × 10⁻¹⁹ J exactly, since the elementary charge is now fixed.

Source: CODATA Internationally Recommended Values of the Fundamental Physical Constants (2022 adjustment)

CODATA / NIST · Reviewed 2026-07-01

Calorie (th) (cal)

Energy

Exact conversion

The thermochemical calorie is exactly 4.184 J.

The International Table calorie (4.1868 J) and the 15 °C calorie differ slightly.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Electron Volt to Calorie (th)

To convert from Electron Volt (eV) to Calorie (th) (cal), multiply the value by 3.829294e-20.

Formula: cal = eV × 3.829294e-20

Reverse: eV = cal × 2.611447e+19

Step-by-Step Example

Start with your value in Electron Volt. For example: 5 eV
Multiply by the conversion factor: 5 x 3.829294e-20
The result is: 1.914647e-19 cal

About Electron Volt

The electron volt (eV) is a unit of energy and work. One electron volt equals 1.602177 × 10^-19 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

About Calorie (th)

The thermochemical calorie equals 4.184 joules. Not to be confused with the food Calorie (kcal), which equals 1,000 calories.

Common uses: chemistry, nutrition, heating.

Frequently Asked Questions

How many Calorie (th) are in 1 Electron Volt?

There are exactly 3.829294e-20 Calorie (th) in 1 Electron Volt. This means the conversion factor from Electron Volt to Calorie (th) is 3.829294e-20.

What is the formula to convert Electron Volt to Calorie (th)?

The formula to convert Electron Volt to Calorie (th) is: cal = eV × 3.829294e-20. For example, to convert 10 Electron Volt to Calorie (th), you would multiply 10 by 3.829294e-20.

What is a Electron Volt?