Convert BTU per Hour to Kilowatts
Instantly convert BTU per Hour (BTU/hr) to Kilowatts (kW) with our free online calculator.
Formula: BTU/hr to kW — multiply by 2.9307e-4
Reference Table
| BTU per Hour (BTU/hr) | Kilowatts (kW) |
|---|---|
| 1 | 0.000293071 |
| 5 | 0.00146536 |
| 10 | 0.00293071 |
| 25 | 0.00732678 |
| 50 | 0.0146536 |
| 100 | 0.0293071 |
How to Convert BTU per Hour to Kilowatts
Formula
To convert BTU per Hour (BTU/hr) to Kilowatts (kW): multiply by 2.9307e-4
Step-by-Step
- Start with your value in BTU per Hour (BTU/hr).
- Multiply by 2.9307e-4 to perform the conversion.
- The result is your value expressed in Kilowatts (kW).
Conversion Factor
1 BTU/hr = 0.000293071 kW
Reverse Factor
1 kW = 3412.14 BTU/hr
Worked Example
Convert 25 BTU per Hour to Kilowatts: 25 BTU/hr = 0.00732678 kW
About BTU per Hour (BTU/hr)
An imperial unit of power (rate of heat transfer or thermal-energy flow), equal to ≈ 0.29307 watts per NIST SP 811 (= exactly 1/3,600 of 1,055.06 J/s in International Table form). BTU/hr is the dominant working unit for US HVAC equipment sizing per the ASHRAE Handbook, AHRI / NRCan / DOE equipment-rating standards, and the energy guide labels on every US-sold air conditioner, heat pump, water heater, and gas furnace. Reference values and the 'ton of refrigeration' convention: 12,000 BTU/hr ≈ 3.517 kW = exactly 1 'ton of refrigeration' (originally defined as the heat-removal rate to freeze 1 short ton of water in 24 hours); residential central-AC sizing 24,000-60,000 BTU/hr (2-5 tons); window AC 5,000-12,000 BTU/hr; mini-split heat pump 9,000-36,000 BTU/hr per indoor head; gas furnace input 40,000-100,000 BTU/hr residential / 200,000-500,000 BTU/hr light commercial; tank water heater 30,000-50,000 BTU/hr; tankless 150,000-200,000 BTU/hr; commercial natural-gas-fired boiler 0.5-50 million BTU/hr.
About Kilowatt (kW)
A metric unit of power equal to exactly 1,000 watts. kW is the practical working unit for residential and commercial-scale appliances, systems, and energy infrastructure: residential electricity-billing rate units (utility tariffs in kWh = kilowatt-hours of energy delivered); electric kettle 1.5-3 kW; electric oven element 2-5 kW per element; central AC compressor 3-5 kW per ton of refrigeration; whole-home generator 10-22 kW; EV motor peak power (Nissan Leaf 110 kW = 147 hp; Tesla Model 3 LR 180 kW = 241 hp; Tesla Model S Plaid combined three-motor 760 kW = 1,020 hp; Lucid Air Sapphire 936 kW = 1,256 hp); home rooftop solar PV system 5-15 kW; commercial-rooftop PV 50-500 kW; utility-scale PV 1-1,000 MW (note: MW not kW). HVAC equipment in metric markets is rated in kW alongside ton-of-refrigeration (1 ton = 3.517 kW). Convert kW to horsepower by multiplying by 1.341; to BTU/hr by multiplying by 3,412.
Quick Facts
- 1 BTU per Hour equals 0.000293071 Kilowatts
- 1 Kilowatt equals 3412.14 BTU per Hour
- BTU per Hour is a unit of power
- Kilowatt is a unit of power
- This conversion is commonly used in electrical systems, automotive performance, and HVAC sizing
- The BTU per Hour belongs to the imperial system
- The Kilowatt belongs to the metric system
Common BTU per Hour to Kilowatt Conversions
| BTU per Hour (BTU/hr) | Kilowatts (kW) |
|---|---|
| 0.01 | 0.00000293071 |
| 0.1 | 0.0000293071 |
| 0.25 | 0.0000732678 |
| 0.5 | 0.000146536 |
| 1 | 0.000293071 |
| 2 | 0.000586142 |
| 3 | 0.000879213 |
| 5 | 0.00146536 |
| 10 | 0.00293071 |
| 15 | 0.00439607 |
| 20 | 0.00586142 |
| 25 | 0.00732678 |
| 50 | 0.0146536 |
| 75 | 0.0219803 |
| 100 | 0.0293071 |
| 250 | 0.0732678 |
| 500 | 0.146536 |
| 1000 | 0.293071 |
| 5000 | 1.46536 |
| 10000 | 2.93071 |
Understanding BTU per Hour
The BTU per Hour (symbol: BTU/hr) is a unit of power. An imperial unit of power (rate of heat transfer or thermal-energy flow), equal to ≈ 0.29307 watts per NIST SP 811 (= exactly 1/3,600 of 1,055.06 J/s in International Table form). BTU/hr is the dominant working unit for US HVAC equipment sizing per the ASHRAE Handbook, AHRI / NRCan / DOE equipment-rating standards, and the energy guide labels on every US-sold air conditioner, heat pump, water heater, and gas furnace. Reference values and the 'ton of refrigeration' convention: 12,000 BTU/hr ≈ 3.517 kW = exactly 1 'ton of refrigeration' (originally defined as the heat-removal rate to freeze 1 short ton of water in 24 hours); residential central-AC sizing 24,000-60,000 BTU/hr (2-5 tons); window AC 5,000-12,000 BTU/hr; mini-split heat pump 9,000-36,000 BTU/hr per indoor head; gas furnace input 40,000-100,000 BTU/hr residential / 200,000-500,000 BTU/hr light commercial; tank water heater 30,000-50,000 BTU/hr; tankless 150,000-200,000 BTU/hr; commercial natural-gas-fired boiler 0.5-50 million BTU/hr.
It belongs to the imperial measurement system.
BTU per Hour are commonly used in electrical systems, automotive performance, and HVAC sizing.
Understanding Kilowatts
The Kilowatt (symbol: kW) is a unit of power. A metric unit of power equal to exactly 1,000 watts. kW is the practical working unit for residential and commercial-scale appliances, systems, and energy infrastructure: residential electricity-billing rate units (utility tariffs in kWh = kilowatt-hours of energy delivered); electric kettle 1.5-3 kW; electric oven element 2-5 kW per element; central AC compressor 3-5 kW per ton of refrigeration; whole-home generator 10-22 kW; EV motor peak power (Nissan Leaf 110 kW = 147 hp; Tesla Model 3 LR 180 kW = 241 hp; Tesla Model S Plaid combined three-motor 760 kW = 1,020 hp; Lucid Air Sapphire 936 kW = 1,256 hp); home rooftop solar PV system 5-15 kW; commercial-rooftop PV 50-500 kW; utility-scale PV 1-1,000 MW (note: MW not kW). HVAC equipment in metric markets is rated in kW alongside ton-of-refrigeration (1 ton = 3.517 kW). Convert kW to horsepower by multiplying by 1.341; to BTU/hr by multiplying by 3,412.
It belongs to the metric measurement system.
Kilowatts are commonly used in electrical systems, automotive performance, and HVAC sizing.
Why Convert BTU per Hour to Kilowatts?
Power conversions between BTU per Hour and Kilowatts are needed in electrical engineering, automotive performance comparison, and HVAC system design. Motor ratings, generator capacities, and appliance specifications are published in different power units depending on the manufacturer and region.
Frequently Asked Questions
How do I convert BTU per Hour to Kilowatts?
An imperial unit of power (rate of heat transfer or thermal-energy flow), equal to ≈ 0. To convert BTU per Hour to Kilowatts, multiply by 2.9307e-4. For example, 25 BTU/hr equals 0.00732678 kW.
How many Kilowatts are in 1 BTU per Hour?
There are 0.000293071 Kilowatts in 1 BTU per Hour.
How many BTU per Hour are in 1 Kilowatt?
There are 3412.14 BTU per Hour in 1 Kilowatt.
What is the formula for BTU per Hour to Kilowatt conversion?
The formula is: multiply by 2.9307e-4. This means 1 BTU/hr = 0.000293071 kW.
Is a BTU per Hour bigger than a Kilowatt?
Yes. One BTU per Hour is larger than one Kilowatt because 1 BTU/hr equals 0.000293071 kW, which is less than 1.
When do you need to convert between BTU per Hour and Kilowatts?
A metric unit of power equal to exactly 1,000 watts. BTU per Hour and Kilowatt are both power units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.