Erg to Rydberg Converter

Energy Converter

27 units available

Decimals:

From

To

45,874,253,167.15843

1 erg = 45,874,253,167.15843 Ry

Formula:

Ry = erg × 4.587425e+10

With your value: 1 erg = 45,874,253,167.15843 Ry

How big is that?

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

Your value1.00 erg

Heartbeat (1.0e+7× your value)1.00e+7 erg

AA battery charge (1.0e+11× your value)1.00e+11 erg

Slice of bread (2.8e+12× your value)2.80e+12 erg

Daily food intake (8.4e+13× your value)8.40e+13 erg

Litre of petrol (3.4e+14× your value)3.42e+14 erg

Other Erg to Rydberg conversions

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

Erg to Rydberg Conversion Table

Erg (erg)	Rydberg (Ry)
0.5	22,937,126,583.579216
1	45,874,253,167.15843
2	91,748,506,334.31686
5	229,371,265,835.79214
10	458,742,531,671.5843
15	688,113,797,507.3766
20	917,485,063,343.1686
25	1.146856e+12
50	2.293713e+12
100	4.587425e+12
250	1.146856e+13
500	2.293713e+13
1000	4.587425e+13

Rydberg to Erg Conversion Table

Rydberg (Ry)	Erg (erg)
0.5	1.089936e-11
1	2.179872e-11
2	4.359744e-11
5	1.089936e-10
10	2.179872e-10
15	3.269808e-10
20	4.359744e-10
25	5.449680e-10
50	1.089936e-9
100	2.179872e-9
250	5.449680e-9
500	1.089936e-8
1000	2.179872e-8

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.

Erg (erg)

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

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

How to Convert Erg to Rydberg

To convert from Erg (erg) to Rydberg (Ry), multiply the value by 45,874,253,167.15843.

Formula: Ry = erg × 4.587425e+10

Reverse: erg = Ry × 2.179872e-11

Step-by-Step Example

Start with your value in Erg. For example: 5 erg
Multiply by the conversion factor: 5 x 45,874,253,167.15843
The result is: 229,371,265,835.79214 Ry

About Erg

The erg (erg) is a unit of energy and work. One erg equals 1.000000 × 10^-7 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 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.

Frequently Asked Questions

How many Rydberg are in 1 Erg?

There are exactly 45,874,253,167.15843 Rydberg in 1 Erg. This means the conversion factor from Erg to Rydberg is 45,874,253,167.15843.

What is the formula to convert Erg to Rydberg?

The formula to convert Erg to Rydberg is: Ry = erg × 4.587425e+10. For example, to convert 10 Erg to Rydberg, you would multiply 10 by 45,874,253,167.15843.

What is a Erg?