Kiloelectron Volt to Watt-Hour Converter

Energy Converter

27 units available

Decimals:

From

To

4.450491e-20

1 keV = 4.450491e-20 Wh

Formula:

Wh = keV × 4.450491e-20

With your value: 1 keV = 4.450491e-20 Wh

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 Watt-Hour conversions

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

Kiloelectron Volt to Watt-Hour Conversion Table

Kiloelectron Volt (keV)	Watt-Hour (Wh)
0.5	2.225245e-20
1	4.450491e-20
2	8.900981e-20
5	2.225245e-19
10	4.450491e-19
15	6.675736e-19
20	8.900981e-19
25	1.112623e-18
50	2.225245e-18
100	4.450491e-18
250	1.112623e-17
500	2.225245e-17
1000	4.450491e-17

Watt-Hour to Kiloelectron Volt Conversion Table

Watt-Hour (Wh)	Kiloelectron Volt (keV)
0.5	1.123472e+19
1	2.246943e+19
2	4.493887e+19
5	1.123472e+20
10	2.246943e+20
15	3.370415e+20
20	4.493887e+20
25	5.617358e+20
50	1.123472e+21
100	2.246943e+21
250	5.617358e+21
500	1.123472e+22
1000	2.246943e+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

Watt-Hour (Wh)

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 Watt-Hour

To convert from Kiloelectron Volt (keV) to Watt-Hour (Wh), multiply the value by 4.450491e-20.

Formula: Wh = keV × 4.450491e-20

Reverse: keV = Wh × 2.246943e+19

Step-by-Step Example

Start with your value in Kiloelectron Volt. For example: 5 keV
Multiply by the conversion factor: 5 x 4.450491e-20
The result is: 2.225245e-19 Wh

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 Watt-Hour

The watt-hour (Wh) is a unit of energy and work. One watt-hour equals 3600 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.

Frequently Asked Questions

How many Watt-Hour are in 1 Kiloelectron Volt?

There are exactly 4.450491e-20 Watt-Hour in 1 Kiloelectron Volt. This means the conversion factor from Kiloelectron Volt to Watt-Hour is 4.450491e-20.

What is the formula to convert Kiloelectron Volt to Watt-Hour?

The formula to convert Kiloelectron Volt to Watt-Hour is: Wh = keV × 4.450491e-20. For example, to convert 10 Kiloelectron Volt to Watt-Hour, you would multiply 10 by 4.450491e-20.

What is a Kiloelectron Volt?