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Kilocalorie per Hour Converter

Convert kilocalories per hour to watts, BTU per hour, horsepower and other power units.

What this tool does

Convert kilocalories per hour to watts, BTU per hour, horsepower and other power units. Type an amount in kilocalories (International Table) per hour, choose the units, and the tool converts it to watts. It offers 7 power units and also shows the same amount in the others.

Inputs

  • Value: A number.
  • From: Choose one: Kilocalorie (International Table) per hour, Kilocalorie (thermochemical) per hour, Watt, Kilowatt, BTU (International Table) per hour, Horsepower (mechanical, 550 ft·lbf/s), Foot pound-force per second. Starts as Kilocalorie (International Table) per hour.
  • To: Choose one of the same 7 units as "From". Starts as Watt.

How to use

  1. Enter the amount you want to convert.
  2. Choose the unit to convert from and the unit to convert to.
  3. Read the result: the converted amount and the same amount in the other units. It appears once every required field has a valid value.

Worked examples

Conversions from kilocalories (International Table) per hour to watts:

  • 1 kcal (IT)/h = 1.163 W
  • 5 kcal (IT)/h = 5.815 W
  • 10 kcal (IT)/h = 11.63 W
  • 50 kcal (IT)/h = 58.15 W
  • 100 kcal (IT)/h = 116.3 W

Multiply the number of kilocalories (International Table) per hour by 1.163 to get watts. Both units are exact definitions, so 1.163 is the exact factor: 1 kcal (IT)/h = 1.163 W.

Sources: Kilocalorie (International Table) per hour: exact by definition. Watt: SI Brochure, 9th edition (2019).

Limitations

  • Converts units of power only. It does not estimate metabolic rate or calories burned.
  • Both International Table and thermochemical kilocalories are listed; pick the one your source uses.

FAQs

Q: How many watts is one kilocalorie per hour?
A: One kilocalorie (International Table) per hour is exactly 1.163 watts. The thermochemical kilocalorie gives about 1.1622 watts.
Q: Which kilocalorie does the page start with?
A: The International Table kilocalorie. The thermochemical version is listed separately; the difference is under 0.1 percent.
Q: Can I use this for body energy use?
A: It converts the unit only. A food Calorie is a kilocalorie, so a steady 1 kcal per hour equals the wattage shown, but the page does not estimate how much energy a person uses.

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