Erg to Watt-Hour Converter

Energy Converter

27 units available

Decimals:

From

To

2.777778e-11

1 erg = 2.777778e-11 Wh

Formula:

Wh = erg × 2.777778e-11

With your value: 1 erg = 2.777778e-11 Wh

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 Watt-Hour conversions

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

Erg to Watt-Hour Conversion Table

Erg (erg)	Watt-Hour (Wh)
0.5	1.388889e-11
1	2.777778e-11
2	5.555556e-11
5	1.388889e-10
10	2.777778e-10
15	4.166667e-10
20	5.555556e-10
25	6.944444e-10
50	1.388889e-9
100	2.777778e-9
250	6.944444e-9
500	1.388889e-8
1000	2.777778e-8

Watt-Hour to Erg Conversion Table

Watt-Hour (Wh)	Erg (erg)
0.5	18,000,000,000
1	36,000,000,000
2	72,000,000,000
5	180,000,000,000
10	360,000,000,000
15	540,000,000,000
20	720,000,000,000
25	900,000,000,000
50	1.800000e+12
100	3.600000e+12
250	9.000000e+12
500	1.800000e+13
1000	3.600000e+13

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

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 Erg to Watt-Hour

To convert from Erg (erg) to Watt-Hour (Wh), multiply the value by 2.777778e-11.

Formula: Wh = erg × 2.777778e-11

Reverse: erg = Wh × 3.600000e+10

Step-by-Step Example

Start with your value in Erg. For example: 5 erg
Multiply by the conversion factor: 5 x 2.777778e-11
The result is: 1.388889e-10 Wh

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 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 Erg?

There are exactly 2.777778e-11 Watt-Hour in 1 Erg. This means the conversion factor from Erg to Watt-Hour is 2.777778e-11.

What is the formula to convert Erg to Watt-Hour?

The formula to convert Erg to Watt-Hour is: Wh = erg × 2.777778e-11. For example, to convert 10 Erg to Watt-Hour, you would multiply 10 by 2.777778e-11.

What is a Erg?