Kiloelectron Volt to Kilocalorie Converter

Energy Converter

27 units available

Decimals:

From

To

3.829294e-20

1 keV = 3.829294e-20 kcal

Formula:

kcal = keV × 3.829294e-20

With your value: 1 keV = 3.829294e-20 kcal

How big is that?

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

Your value1.00 keV

Heartbeat (6.2e+15× your value)6.24e+15 keV

AA battery charge (6.2e+19× your value)6.24e+19 keV

Slice of bread (1.7e+21× your value)1.75e+21 keV

Daily food intake (5.2e+22× your value)5.24e+22 keV

Litre of petrol (2.1e+23× your value)2.13e+23 keV

Other Kiloelectron Volt to Kilocalorie conversions

2 keV to kcal 3 keV to kcal 4 keV to kcal 5 keV to kcal 6 keV to kcal 7 keV to kcal 8 keV to kcal

Kiloelectron Volt to Kilocalorie Conversion Table

Kiloelectron Volt (keV)	Kilocalorie (kcal)
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

Kilocalorie to Kiloelectron Volt Conversion Table

Kilocalorie (kcal)	Kiloelectron Volt (keV)
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.

Kiloelectron Volt (keV)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

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

Kilocalorie (kcal)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

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 Kiloelectron Volt to Kilocalorie

To convert from Kiloelectron Volt (keV) to Kilocalorie (kcal), multiply the value by 3.829294e-20.

Formula: kcal = keV × 3.829294e-20

Reverse: keV = kcal × 2.611447e+19

Step-by-Step Example

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

About Kiloelectron Volt

The kiloelectron volt (keV) is a unit of energy and work. One kiloelectron volt equals 1.602177 × 10^-16 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 Kilocalorie

The kilocalorie (food Calorie) equals 1,000 calories or 4,184 joules. It is the standard unit for food energy content.

Common uses: nutrition, diet, food labeling.

Frequently Asked Questions

How many Kilocalorie are in 1 Kiloelectron Volt?

There are exactly 3.829294e-20 Kilocalorie in 1 Kiloelectron Volt. This means the conversion factor from Kiloelectron Volt to Kilocalorie is 3.829294e-20.

What is the formula to convert Kiloelectron Volt to Kilocalorie?

The formula to convert Kiloelectron Volt to Kilocalorie is: kcal = keV × 3.829294e-20. For example, to convert 10 Kiloelectron Volt to Kilocalorie, you would multiply 10 by 3.829294e-20.

What is a Kiloelectron Volt?