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Horsepower to Kilocalories per Hour Converter

Convert horsepower (mechanical, 550 ft·lbf/s) (hp) to kilocalories per hour (kcal/h), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter a power, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

A number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
The unit you want the answer in. Swap exchanges the two units.
Result
641.615568283 kcal/h
watts
745.699871582 W
microwatts
745,699,871.582 µW
milliwatts
745,699.871582 mW
kilowatts
0.745699871582 kW
megawatts
0.000745699871582 MW
gigawatts
7.45699871582 × 10⁻⁷ GW
metric horsepower (PS)
1.01386966542 PS
horsepower (electric)
0.999597683086 hp(E)
BTU (IT) per hour
2,544.43357764 BTU/h

1 hp = 641.615568283 kcal/h

Show the working
  1. 1 hp = 641.615568283 kcal/h
  2. 1 × 641.615568283 = 641.615568283 kcal/h

How to convert horsepower to kilocalories per hour

1 hp = 641.615568283 kcal/h, so multiply by 641.615568283 to go from horsepower (mechanical, 550 ft·lbf/s) to kilocalories per hour. Going the other way, 1 kcal/h = 0.00155856567302 hp.

kcal/h = hp × 641.615568283
hp = kcal/h × 0.00155856567302

Worked example:

1 hp = 641.615568283 kcal/h
5 × 641.615568283 = 3208.07784142 kcal/h

Horsepower to kilocalories per hour table

HorsepowerKilocalories per Hour
1 hp641.615568283 kcal/h
2 hp1,283.23113657 kcal/h
3 hp1,924.84670485 kcal/h
4 hp2,566.46227313 kcal/h
5 hp3,208.07784142 kcal/h
6 hp3,849.6934097 kcal/h
7 hp4,491.30897798 kcal/h
8 hp5,132.92454626 kcal/h
9 hp5,774.54011455 kcal/h
10 hp6,416.15568283 kcal/h
15 hp9,624.23352425 kcal/h
20 hp12,832.3113657 kcal/h
25 hp16,040.3892071 kcal/h
30 hp19,248.4670485 kcal/h
40 hp25,664.6227313 kcal/h
50 hp32,080.7784142 kcal/h
75 hp48,121.1676212 kcal/h
100 hp64,161.5568283 kcal/h
250 hp160,403.892071 kcal/h
500 hp320,807.784142 kcal/h
1000 hp641,615.568283 kcal/h

About the units

Horsepower (hp)
Horsepower (mechanical, 550 ft·lbf/s), a US customary unit. Exact from 550 × 0.3048 m × 0.45359237 kg × 9.80665 m/s² per second. Definition: NIST SP 811 Appendix B.9 (horsepower, 550 ft·lbf/s).
Kilocalories per Hour (kcal/h)
Kilocalories per hour, a specialised unit. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.

Formula version 0.1.0Reviewed