Enter either a heat rate in British thermal units per hour (Btu/hr) or a power value in kilowatts (kW) into the calculator to determine the other. Note: Btu by itself is a unit of energy, but Btu/hr is a unit of power (heat transfer rate), which is why it can be converted to kW.
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Btu/hr To kW Formula
The following formula is used to convert a heat rate (power) from Btu per hour (Btu/hr) to kilowatts (kW).
kW = (Btu/hr) * 0.00029307107
Variables:
- kW is the power in kilowatts
- Btu/hr is the heat rate (power) in British thermal units per hour
To calculate the power in kilowatts, multiply the heat rate in Btu/hr by 0.00029307107.
| Btu/hr | Kilowatts (kW) |
|---|---|
| 3,000 | 0.879 |
| 5,000 | 1.465 |
| 6,000 | 1.758 |
| 8,000 | 2.345 |
| 9,000 | 2.638 |
| 10,000 | 2.931 |
| 12,000 | 3.517 |
| 15,000 | 4.396 |
| 18,000 | 5.274 |
| 20,000 | 5.861 |
| 24,000 | 7.034 |
| 30,000 | 8.792 |
| 36,000 | 10.551 |
| 42,000 | 12.309 |
| 48,000 | 14.067 |
| 60,000 | 17.584 |
| 75,000 | 21.980 |
| 90,000 | 26.376 |
| 100,000 | 29.307 |
| 120,000 | 35.169 |
| Conversion factors used: 1 kW = 3412.14 Btu/hr; 1 Btu/hr = 0.00029307107 kW. | |
What is a Btu/hr To kW?
A Btu/hr to kW conversion is a conversion between two units of power (rate of energy transfer). A Btu (British Thermal Unit) is a unit of energy (heat), defined approximately as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. When that energy is expressed per unit time (Btu per hour, or Btu/hr), it becomes a power (heat rate) unit. A kilowatt (kW) is an SI unit of power equal to 1,000 watts. This conversion is commonly used in HVAC, engineering, and energy applications.
How to Calculate Btu To Kw?
The following steps outline how to convert Btu/hr to kW using the formula: kW = (Btu/hr) * 0.00029307107.
- First, determine the heat rate (power) in Btu per hour (Btu/hr).
- Next, insert the value of Btu/hr into the formula: kW = (Btu/hr) * 0.00029307107.
- Calculate the result by multiplying the value of Btu/hr by 0.00029307107.
- Finally, obtain the power in kilowatts (kW).
- After inserting the variables and calculating the result, check your answer with a calculator.
Example Problem:
Use the following variables as an example problem to test your knowledge:
Heat rate in British thermal units per hour (Btu/hr) = 500
Inserting the value of Btu/hr into the formula: kW = 500 * 0.00029307107
Calculating the result: kW = 0.146535535
The power in kilowatts (kW) is approximately 0.1465.
