Horsepower (Boiler) to Calorie/Hour Converter

Power Converter

22 units available

Decimals:

From

To

8,440,296.368727

1 hp (S) = 8,440,296.368727 cal/h

Formula:

cal/h = hp (S) × 8,440,296.368726633

With your value: 1 hp (S) = 8,440,296.36872663 cal/h

How big is that?

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

LED bulb (1/1.1e+3 your value)0.000917 hp (S)

Laptop (1/1.5e+2 your value)0.00663 hp (S)

Microwave oven (1/9.8 your value)0.102 hp (S)

Electric kettle (1/3.3 your value)0.306 hp (S)

Your value1.00 hp (S)

Family car engine (9.2× your value)9.17 hp (S)

Other Horsepower (Boiler) to Calorie/Hour conversions

2 hp (S) to cal/h 3 hp (S) to cal/h 4 hp (S) to cal/h 5 hp (S) to cal/h 6 hp (S) to cal/h 7 hp (S) to cal/h 8 hp (S) to cal/h

Horsepower (Boiler) to Calorie/Hour Conversion Table

Horsepower (Boiler) (hp (S))	Calorie/Hour (cal/h)
0.5	4,220,148.184363
1	8,440,296.368727
2	16,880,592.737453
5	42,201,481.843633
10	84,402,963.687266
15	126,604,445.5309
20	168,805,927.374533
25	211,007,409.218166
50	422,014,818.436332
100	844,029,636.872663
250	2,110,074,092.181659
500	4,220,148,184.363317
1000	8,440,296,368.726634

Calorie/Hour to Horsepower (Boiler) Conversion Table

Calorie/Hour (cal/h)	Horsepower (Boiler) (hp (S))
0.5	5.923963e-8
1	1.184793e-7
2	2.369585e-7
5	5.923963e-7
10	1.184793e-6
15	1.777189e-6
20	2.369585e-6
25	2.961981e-6
50	5.923963e-6
100	1.184793e-5
250	2.961981e-5
500	5.923963e-5
1000	0.000118

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 (Boiler) (hp (S))

Power

Exact conversion

Derived from the watt (1 W = 1 J/s).

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

Calorie/Hour (cal/h)

Power

Exact conversion

Derived from the watt (1 W = 1 J/s).

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 (Boiler) to Calorie/Hour

To convert from Horsepower (Boiler) (hp (S)) to Calorie/Hour (cal/h), multiply the value by 8,440,296.368726633.

Formula: cal/h = hp (S) × 8,440,296.368726633

Reverse: hp (S) = cal/h × 1.184793e-7

Step-by-Step Example

Start with your value in Horsepower (Boiler). For example: 5 hp (S)
Multiply by the conversion factor: 5 x 8,440,296.368726633
The result is: 42,201,481.843633 cal/h

About Horsepower (Boiler)

The horsepower (boiler) (hp (S)) is a unit of power. One horsepower (boiler) equals 9809.5 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: power calculations, engineering and science, education.

About Calorie/Hour

The calorie/hour (cal/h) is a unit of power. One calorie/hour equals 0.001162222222 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: power calculations, engineering and science, education.

Frequently Asked Questions

How many Calorie/Hour are in 1 Horsepower (Boiler)?

There are exactly 8,440,296.368726633 Calorie/Hour in 1 Horsepower (Boiler). This means the conversion factor from Horsepower (Boiler) to Calorie/Hour is 8,440,296.368726633.

What is the formula to convert Horsepower (Boiler) to Calorie/Hour?

The formula to convert Horsepower (Boiler) to Calorie/Hour is: cal/h = hp (S) × 8,440,296.368726633. For example, to convert 10 Horsepower (Boiler) to Calorie/Hour, you would multiply 10 by 8,440,296.368726633.

What is a Horsepower (Boiler)?