Convert BTU per Hour to Watts
Instantly convert BTU per Hour (BTU/hr) to Watts (W) with our free online calculator.
Formula: BTU/hr to W — multiply by 0.293071
Reference Table
| BTU per Hour (BTU/hr) | Watts (W) |
|---|---|
| 1 | 0.293071 |
| 5 | 1.46536 |
| 10 | 2.93071 |
| 25 | 7.32678 |
| 50 | 14.6536 |
| 100 | 29.3071 |
How to Convert BTU per Hour to Watts
Formula
To convert BTU per Hour (BTU/hr) to Watts (W): multiply by 0.293071
Step-by-Step
- Start with your value in BTU per Hour (BTU/hr).
- Multiply by 0.293071 to perform the conversion.
- The result is your value expressed in Watts (W).
Conversion Factor
1 BTU/hr = 0.293071 W
Reverse Factor
1 W = 3.41214 BTU/hr
Worked Example
Convert 25 BTU per Hour to Watts: 25 BTU/hr = 7.32678 W
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 Watt (W)
The SI unit of power (ISO 80000-5 §5-19), defined as exactly one joule per second (1 W = 1 J/s = 1 kg·m²/s³ = 1 V·A in electrical systems). Named after Scottish mechanical engineer James Watt (1736-1819), whose late-18th-century improvements to the Newcomen atmospheric steam engine (separate condenser, sun-and-planet gear) launched the Industrial Revolution and made power-unit standardization economically necessary. The watt is the universal electrical and mechanical power unit across scientific publication, engineering, consumer electronics, and energy markets. Reference values: a typical 9 W LED bulb produces ~800 lumens (equivalent to a 60 W incandescent at 14 lm/W luminous efficacy); audio equipment output power (a hi-fi home amplifier 50-200 W per channel; a concert PA system 5,000-50,000 W); a modern crystalline-silicon residential solar PV module ~350-450 W peak per panel under STC; a household refrigerator continuous load ~150 W average; a high-end gaming PC at full load ~700 W; a Tesla Model S Plaid peak motor output ~760 kW (1,020 hp); the world's electricity-generating capacity ~8 TW (8 × 10¹² W).
Quick Facts
- 1 BTU per Hour equals 0.293071 Watts
- 1 Watt equals 3.41214 BTU per Hour
- BTU per Hour is a unit of power
- Watt 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 Watt belongs to the metric system
Common BTU per Hour to Watt Conversions
| BTU per Hour (BTU/hr) | Watts (W) |
|---|---|
| 0.01 | 0.00293071 |
| 0.1 | 0.0293071 |
| 0.25 | 0.0732678 |
| 0.5 | 0.146536 |
| 1 | 0.293071 |
| 2 | 0.586142 |
| 3 | 0.879213 |
| 5 | 1.46536 |
| 10 | 2.93071 |
| 15 | 4.39607 |
| 20 | 5.86142 |
| 25 | 7.32678 |
| 50 | 14.6536 |
| 75 | 21.9803 |
| 100 | 29.3071 |
| 250 | 73.2678 |
| 500 | 146.536 |
| 1000 | 293.071 |
| 5000 | 1465.36 |
| 10000 | 2930.71 |
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 Watts
The Watt (symbol: W) is a unit of power. The SI unit of power (ISO 80000-5 §5-19), defined as exactly one joule per second (1 W = 1 J/s = 1 kg·m²/s³ = 1 V·A in electrical systems). Named after Scottish mechanical engineer James Watt (1736-1819), whose late-18th-century improvements to the Newcomen atmospheric steam engine (separate condenser, sun-and-planet gear) launched the Industrial Revolution and made power-unit standardization economically necessary. The watt is the universal electrical and mechanical power unit across scientific publication, engineering, consumer electronics, and energy markets. Reference values: a typical 9 W LED bulb produces ~800 lumens (equivalent to a 60 W incandescent at 14 lm/W luminous efficacy); audio equipment output power (a hi-fi home amplifier 50-200 W per channel; a concert PA system 5,000-50,000 W); a modern crystalline-silicon residential solar PV module ~350-450 W peak per panel under STC; a household refrigerator continuous load ~150 W average; a high-end gaming PC at full load ~700 W; a Tesla Model S Plaid peak motor output ~760 kW (1,020 hp); the world's electricity-generating capacity ~8 TW (8 × 10¹² W).
It belongs to the metric measurement system.
Watts are commonly used in electrical systems, automotive performance, and HVAC sizing.
Why Convert BTU per Hour to Watts?
Power conversions between BTU per Hour and Watts 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 Watts?
An imperial unit of power (rate of heat transfer or thermal-energy flow), equal to ≈ 0. To convert BTU per Hour to Watts, multiply by 0.293071. For example, 25 BTU/hr equals 7.32678 W.
How many Watts are in 1 BTU per Hour?
There are 0.293071 Watts in 1 BTU per Hour.
How many BTU per Hour are in 1 Watt?
There are 3.41214 BTU per Hour in 1 Watt.
What is the formula for BTU per Hour to Watt conversion?
The formula is: multiply by 0.293071. This means 1 BTU/hr = 0.293071 W.
Is a BTU per Hour bigger than a Watt?
Yes. One BTU per Hour is larger than one Watt because 1 BTU/hr equals 0.293071 W, which is less than 1.
When do you need to convert between BTU per Hour and Watts?
The SI unit of power (ISO 80000-5 §5-19), defined as exactly one joule per second (1 W = 1 J/s = 1 kg·m²/s³ = 1 V·A in electrical systems). BTU per Hour and Watt 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.