Horsepower-Hour to Erg Converter

Energy Converter

27 units available

Decimals:

From

To

2.684520e+13

1 hp·h = 2.684520e+13 erg

Formula:

erg = hp·h × 2.684520e+13

With your value: 1 hp·h = 2.684520e+13 erg

How big is that?

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

Heartbeat (1/2.7e+6 your value)3.73e-7 hp·h

AA battery charge (1/2.7e+2 your value)0.00373 hp·h

Slice of bread (1/9.6 your value)0.104 hp·h

Your value1.00 hp·h

Daily food intake (3.1× your value)3.13 hp·h

Litre of petrol (13× your value)12.7 hp·h

Other Horsepower-Hour to Erg conversions

2 hp·h to erg 3 hp·h to erg 4 hp·h to erg 5 hp·h to erg 6 hp·h to erg 7 hp·h to erg 8 hp·h to erg

Horsepower-Hour to Erg Conversion Table

Horsepower-Hour (hp·h)	Erg (erg)
0.5	1.342260e+13
1	2.684520e+13
2	5.369039e+13
5	1.342260e+14
10	2.684520e+14
15	4.026779e+14
20	5.369039e+14
25	6.711299e+14
50	1.342260e+15
100	2.684520e+15
250	6.711299e+15
500	1.342260e+16
1000	2.684520e+16

Erg to Horsepower-Hour Conversion Table

Erg (erg)	Horsepower-Hour (hp·h)
0.5	1.862531e-14
1	3.725061e-14
2	7.450123e-14
5	1.862531e-13
10	3.725061e-13
15	5.587592e-13
20	7.450123e-13
25	9.312653e-13
50	1.862531e-12
100	3.725061e-12
250	9.312653e-12
500	1.862531e-11
1000	3.725061e-11

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.

Horsepower-Hour (hp·h)

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

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

How to Convert Horsepower-Hour to Erg

To convert from Horsepower-Hour (hp·h) to Erg (erg), multiply the value by 2.684520e+13.

Formula: erg = hp·h × 2.684520e+13

Reverse: hp·h = erg × 3.725061e-14

Step-by-Step Example

Start with your value in Horsepower-Hour. For example: 5 hp·h
Multiply by the conversion factor: 5 x 2.684520e+13
The result is: 1.342260e+14 erg

About Horsepower-Hour

The horsepower-hour (hp·h) is a unit of energy and work. One horsepower-hour equals 2.684520 × 10^+6 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 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.

Frequently Asked Questions

How many Erg are in 1 Horsepower-Hour?

There are exactly 2.684520e+13 Erg in 1 Horsepower-Hour. This means the conversion factor from Horsepower-Hour to Erg is 2.684520e+13.

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

The formula to convert Horsepower-Hour to Erg is: erg = hp·h × 2.684520e+13. For example, to convert 10 Horsepower-Hour to Erg, you would multiply 10 by 2.684520e+13.

What is a Horsepower-Hour?