Rydberg to Kiloelectron Volt Converter

Energy Converter

27 units available

Decimals:

From

To

0.013606

1 Ry = 0.013606 keV

Formula:

keV = Ry × 0.0136056909

With your value: 1 Ry = 0.01360569 keV

How big is that?

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

Your value1.00 Ry

Heartbeat (4.6e+17× your value)4.59e+17 Ry

AA battery charge (4.6e+21× your value)4.59e+21 Ry

Slice of bread (1.3e+23× your value)1.28e+23 Ry

Daily food intake (3.9e+24× your value)3.85e+24 Ry

Litre of petrol (1.6e+25× your value)1.57e+25 Ry

Other Rydberg to Kiloelectron Volt conversions

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

Rydberg to Kiloelectron Volt Conversion Table

Rydberg (Ry)	Kiloelectron Volt (keV)
0.5	0.006803
1	0.013606
2	0.027211
5	0.068028
10	0.136057
15	0.204085
20	0.272114
25	0.340142
50	0.680285
100	1.360569
250	3.401423
500	6.802845
1000	13.605691

Kiloelectron Volt to Rydberg Conversion Table

Kiloelectron Volt (keV)	Rydberg (Ry)
0.5	36.749328
1	73.498657
2	146.997313
5	367.493283
10	734.986565
15	1,102.479848
20	1,469.973131
25	1,837.466413
50	3,674.932826
100	7,349.865653
250	18,374.664132
500	36,749.328263
1000	73,498.656527

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.

Rydberg (Ry)

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

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

How to Convert Rydberg to Kiloelectron Volt

To convert from Rydberg (Ry) to Kiloelectron Volt (keV), multiply the value by 0.0136056909.

Formula: keV = Ry × 0.0136056909

Reverse: Ry = keV × 73.4986565266

Step-by-Step Example

Start with your value in Rydberg. For example: 5 Ry
Multiply by the conversion factor: 5 x 0.0136056909
The result is: 0.068028 keV

About Rydberg

The rydberg (Ry) is a unit of energy and work. One rydberg equals 2.179872 × 10^-18 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 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.

Frequently Asked Questions

How many Kiloelectron Volt are in 1 Rydberg?

There are exactly 0.0136056909 Kiloelectron Volt in 1 Rydberg. This means the conversion factor from Rydberg to Kiloelectron Volt is 0.0136056909.

What is the formula to convert Rydberg to Kiloelectron Volt?

The formula to convert Rydberg to Kiloelectron Volt is: keV = Ry × 0.0136056909. For example, to convert 10 Rydberg to Kiloelectron Volt, you would multiply 10 by 0.0136056909.

What is a Rydberg?